Davenport Surname DNA Project - Home http://davenportdna.com Sat, 22 Feb 2020 07:28:54 +0000 Joomla! - Open Source Content Management en-gb DNA Comparisons Between Lines http://davenportdna.com/results/comparing-lines http://davenportdna.com/results/comparing-lines

The Davenport Surname DNA Project tests the DNA on the Y-chromosome, which only males have. This Y-DNA is passed down from father to son, generation after generation, virtually unchanged. So, two Davenport's who have a common male Davenport ancestor several generations ago, should have essentially identical Y-DNA.

We test up to 111 "markers" on the Y-DNA and compare their values. The group of values for the markers we test is called a Haplotype. The more similar the Haplotypes are to each other, the closer their common ancestor is likely to be.

Occasionally one of the markers will have a "mutation". Mutations are neither good nor bad, they are just a random minor change in the Y-DNA. They do not affect anything, but can be very useful in genealogy.  Once a mutation occurs, it is passed down to all future male Davenport descendents.

When we have participants descended from the same line and find mutations, we do not know which individual branch actually had the mutation, and which had the "original" value. So we try to determine what the "modal", or more accurately, the "ancestral Haplotype" of the line is. In other words - the Y-DNA Haplotype of the progenitor - the first Davenport in the line (that we know of). Then, instead of comparing to each other, we compare to the modal. We do this by "triangulation". For example, assume Thomas had three sons - Charles, Samuel, and John. We test a descendent of Charles - Christopher - and find he has a value of 16 on marker xyz. A descendent of Samuel - Scott - also has a 16 on xyz. Therefore, we can conclude the modal for xyz is 16, because if either participant had a mutation between himself and Thomas, then he would not have the same value (16) as the other participant. If, however Christopher had a 16 and Scott had a 15, then we don't know which, if either, was the modal. So we triangulate, we test James, a descendent of the third son John. James also has a 16. Therefore, since it is much more likely that there was just one mutation somewhere between Samuel and Scott, than two mutations in two branches moving the same direction (15 to 16, instead of 15 to 14), then we assume the modal is 16.

The first chart below compares the modal Haplotype for each of the North American lines that we have tested so far. Only the Rev John, Albemarle, Thomas of Dorchester and Captain Richard lines are close enough to be considered related in a recent genealogical time frame.  The Orme modal is what we believe his Y-DNA looked like based on these three American lines, plus several English Davenports with Cheshire origins.

The second chart looks at the "genetic distance" between the various Davenport lines. Further explanation is included.

 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111
Locus393390394391385385426388439389392389458459459455454447437448449464464464464460GATAYCAYCA456607576570CDYCDY442438531578395395590537641472406511425413413557594436490534450444484520446617568487572640492565710485632495540714716717505556549589552494533636575638462452445YGATA463441YGGA525712593650532715504513561552726635587643497510434461435
Kit #  /19 ab   1 2 ab      abcd H4iiaiib    ab    S1aS1b    S1  ab                                         AT                   
  Haplogroup R-S1480
Orme1324151011141212121313291881011112515192915151718111119231515201735371212119151681010810101223231610121215812222013121113111112123615916122626191210131110912121011113012132213101021151913251712152412231810131891211
Thomas1324151011141212121313291881011112515192915151718111119231515191735371212119151681010810101223231610121215812222013121113111112123615916122626191210131110912121011113012132213101021151913251712152412231810131891211
Capt Rich132415101114121211131329188101111251519281515171811111923151520163537111211915168101081010122323161012121581222201312111311111212                                            
Rev John132415101114121211131329188101111251519291515171811111923151519163537121211915168101081010122323161012121581222201312111311111212                                            
Albemarle13241510111412121113132918810111125151929151517181111192215152016353712121191516810108101012232316101212148122220131211131111121235.215916122626191210131110912121011113012132213101021151913261712152412231810131891211
  Haplogroup R-U152
Machinaw1324141011151212121313291891011112615182915151517                                                                                      
Unattach14241410111412121213132917991111251519291415171710121923151518193737121011915168101081010122323171012121681222201412111411111412                                            
  Haplogroup R-L21
Pamunkey13241411111412121213132916910111125151929151517171111192317151817383811121191516810108101112232315101212169122220131211131111121235.214916122726201211121211912121011112912132413101020152013231612 241223189141791311
East Shr142414111114121212131329179101111241419291515161711101919161417173838121211915168101081011122323161012121681222201512111311111212                                            
  Haplogroup R-Z381
Newberry13231412111412121114133017991111251519291415161711101923171517193437121211915168101081010122323161012121581222201312111311111312                                            
James Rv13231411121412121213132917991111241519291516171911111923161517173639131211915168101081010122325161012121481222201412111311121412                                            
Wm Ford132314101113121211131328178101111261519291415171811111923151517163538121211915168101081011122323161012121681223201312111312111312                                            
  Haplogroup R-M269
Tidewater132414101114121212131330189101111251519301515171712121924171517173839121212915168101081010122222161012121581222201312111311111212                                            
New Kent1424141011151212111213281799111125151928151617171110202316151818354111121191516810108101012232315101212158122220131211141111121235      12111212 912121011                           
  Haplogroup I1a
Altona1322141113131114111211291588811231620271214151511919211515162136371210118151581110899122121151012121681326211413111211111211                                            
  Haplogroup J-CTS1460
Humphrey122314101219111411141130198911112614212915151516111120221513171834361110118151681110811912202220101113168122620151211131012121132.2158151225261912121311109141110912291113211410102415201023141116261223189141791411
Locus393390394391385385426388439389392389458459459455454447437448449464464464464460GATAYCAYCA456607576570CDYCDY442438531578395395590537641472406511425413413557594436490534450444484520446617568487572640492565710485632495540714716717505556549589552494533636575638462452445YGATA463441YGGA525712593650532715504513561552726635587643497510434461435
   /19 ab   1 2 ab      abcd H4iiaiib    ab    S1aS1b    S1  ab                                         AT                   

Y-DNA

 


Genetic Distance

The genetic distance or  "closeness" of the DNA results is used to determine if individuals have a common ancestor. For this comparison we are using the Y-DNA 67 marker test. Usually if two people, with the same surname, have an exact 67 of 67 match - they have a 0 (zero) step difference and thus a common ancestor.  If there is a 66/67 match the difference is 1 (one). A difference of 0 thru about 6 and the same surname "is a match".  Under certain circumstances (rare pattern of results) a 7 or 8 step difference might qualify for a match.  It is also possible to have a very large difference because there could be a multiple step difference on one marker - i.e. - marker 447 has 22 for one person and 27 for another making a difference of 5.

The chart below displays each of the Davenport lines and how they compare with each other. Each line is represented by the modal , or believed original, results for that particular line, since some may vary by a step or two. It also displays the "unknown ancestry" Davenports that haven't been placed into one of these lines. To read the chart - find the line/person on the left side and follow across to the column of the line/person at the top to compare to. Example - there is a 64 step difference between the Albemarle and Humphrey lines.

With the exception of the Humphrey and Altona lines and a few individuals - all participants appear to belong to Haplogroup R1b.  This is the most common Haplogroup found in Western Europe which is what was expected since the earliest documented Davenports came from England.

As can be seen so far - only the Rev. John, Albemarle, Thomas of Dorchester and Captain Richard lines (shaded area) have a common ancestor. Several Davenports of known recent Cheshire, England origin also match this group. But, since their results are so similar, they are not listed in the chart below. 

 

 

  Orme Tho Cap Rev J Alb Pam Mac TW New Wm JR ES NKH Una Alt Hum  
Orme   1 2 2 3 20 12 22 24 17 26 27 26 24 74 65  
Thomas 1   2 3 4 17 11 19 21 20 22 20 22 22 73 64  
Capt Rich 2 2   5 6 17 14 21 24 22 24 22 20 24 74 65  
Rev John 2 3 5   3 18 14 20 20 17 23 21 21 23 72 63  
Albemarle 3 4 6 3   21 14 22 23 20 24 23 24 27 73 64  
Pamunkey 20 17 17 18 21   16 19 20 21 22 16 18 24 75 71  
Mackinaw 12 11 14 14 14 16   19 19 20 21 21 22 16 51 39 37 Markers
Tidewater 22 19 21 20 22 19 19   24 29 25 23 30 28 78 69  
Newberry 24 21 24 20 23 20 19 24   24 17 20 20 21 66 61  
Wm Ford 17 20 22 17 20 21 20 29 24   24 21 29 27 69 64  
James Rv 26 22 24 23 24 22 21 25 17 24   19 30 23 74 71  
East Shr 27 20 22 21 23 16 21 23 20 21 19   24 24 69 66  
New Kent 26 22 20 21 24 18 22 30 20 29 30 24   23 74 69  
Unattach 24 22 24 23 27 24 16 28 21 27 23 24 23   68 65  
Altona 74 73 74 72 73 75 51 78 66 69 74 69 74 68   67  
Humphrey 65 64 65 63 64 71 39 69 61 64 71 66 69 65 67    
              37 Mkr                    
  ]]>
ROOT Thu, 29 Oct 2015 08:12:47 +0000
Current Locations http://davenportdna.com/?id=43 http://davenportdna.com/?id=43  

The tables below list where the participants in the Davenport Surname DNA Project currently reside. The number to the left of the location indicates how many Davenport participants are from that area. The Map below helps illustrate how participants are spread around the United States. As we gain more international participants, an additional world map will be added.

  UNITED STATES                
Alabama   Hawaii 5 Massachusetts 1 New Mexico   South Dakota
  Alaska 1 Idaho 3 Michigan 3 New York 4 Tennessee
6 Arizona 4 Illinois 1 Minnesota 16 North Carolina 22 Texas
5 Arkansas 5 Indiana 1 Missississi  1 North Dakota 1 Utah
17 Calofirnia Iowa Missouri 4 Ohio   Vermont
  Colorado Kansas Montana 7 Oklahoma 11 Virginia
3 Connecticut  Kentucky   Nebraska  5 Oregon 8 Washington
  Delaware 3  Louisiana Nevada 5 Pennsu;vania 3 West Virginia
10 Florida    Maine   New Hampshire   Rhode Island 5 Wisconsin
6 Georgia  Maryland New Jersey 5 South Carolina  1 Wyoming
                   

 

 

   ENGLAND / UK    OTHER EUROPE   CANADA    OTHER WORLD
 5 London 1  Bussum, Netherlands 1  Toronto, Ontario 1  Bentleigh, Australia
 1 Sutton, Macclesfield, Cheshire 1  St. Jansklooster, Netherlands 1  Calgary, Alberta 1  Charleville, Australia
 1 Wilmslow, Cheshire 1  Mougins, France 1  New Brunswick, Canada 1  Frankston, Australia
 1 Manchester, Greater Manchester     1  Belleville, Ontario 1  Auckland, New Zealand
 1 Hyde, Greater Manchester            
 1 Whitefield, Greater Manchester            
 1 Shrewsbury, Shropshire            
 1 Daventry, Northamptonshire            
 1 Chesham, Buckinghamshire            
 1 Cambridge, Cambrideshire            
 1 Bishop's Frome, Herefordshire            
 1 Ipswich, Suffolk            
 1 Prestwich, South Ayrshire, Scotland            
               

 

 

 

]]>
ROOT Mon, 19 Oct 2015 08:38:38 +0000
Y-DNA Analysis http://davenportdna.com/results/analysis http://davenportdna.com/results/analysis English Lines

North American Lines

In North America, the Davenport line can be divided into two groups, the Northern and the Southern. Within each group, there are several, not necessarily related, Davenport lines.

The Northern Davenports currently consist of the following lines: The Rev John, Thomas of Dorchester, Captain Richard, Humphrey of Barbados, William of Fortham,  and the Mackinaw Davenports. There has been a long held belief that the five heads of Davenport families that settled in Boston prior to 1676 were somehow related. This included the Rev John, Thomas of Dorchester, Captain Richard, Humphrey, and Francis Davenport. No connection had been found, but the possibility seemed likely.

DNA results have now shown that three of the five Boston lines come from the same "stock". Their Y-DNA is very similar. This includes Rev John, Thomas, and Captain Richard. One of the Southern lines, the Albemarle's, also match this group. They descend from Richard Davenport who appeared in North Caroline by 1665. The Y-DNA of these four North American lines match the Cheshire Davenports [soon to be] mentioned above. They are related, and their most recent common ancestor will likely have lived prior to the 1600's. Due to some similar mutations, we believe that Richard of the Albemarle's is part of the Great Wigston Davenports of Leicestershire, England.

There is good evidence that Francis descends from Bramhall branch of the Cheshire line. However, the Y-DNA of his descendents do match any other Davenport line. A likely explanation is that one of the many stories of discontinuity in the branch may be true. The descendents of Francis Davenport moved south, settling in North and South Carolina, becoming what we now call the Newberry Davenports.

Humphrey Davenport of Barbados descendents remained in the North, primarily in New Jersey, and like Francis, does not match any other Davenport line. While most Davenport lines from from the R1b Haplogroup, the Humphrey line belongs to Haplogroup J1.

The Southern Davenports currently consists of the following lines: James River, New Kent / Hanover, Albemarle, Pamunkey, Tidewater, Newberry, Altona, and an Unattached line.

As far as we know, we do not yet any legitimate descendents of any James River Davenports, including Lancelot. Lancelot is not the father of Martin or Davis Davenport and the Pamunkey's. There is no evidence to support this theory, and those that believed they were Lancelot descendents ended up matching other Davenport lines.

The New Kent/Hanover Davenports began their time with the Surname Project labeled as Limbo Davenports. Their DNA testing showed unexpected connections among three test kit holders who at the time of their testing were believed to be James River Davenports, three well-documented Pamunkey Davenports, members of a Woodruff line, an Overton, and now several kit holders with surnames of Flowers, Sturgill, and Frederick. Extensive research correlating these DNA results with the extant historical record resulted in the discovery of the New Kent/Hanover Davenport line, now well established. Interested readers should read A Chronology of the New Kent/Hanover Davenports (2014), available here: http://www.randidavenport.com/my-works/the-new-kenthanover-davenports

We have become considerably more familiar with the Albemarle Davenport line since the DNA project began in 2003. We now know they connect back to the Great Wigston Davenports, as mentioned previously, based on similar Y-DNA. Once researchers knew where to focus their attention, the believed progenitor of this line is Richard Davenport, born in Kilby Parish, Leicestershire, England on 6 Sept. 1640. More detail here: Albemarle Davenport Analysis

The Pamunkey Davenport's --- to be continued.

With just one documented Tidewater Davenport, we don't have too much to report on this line yet. Although, we do have a couple participants tracing back to Pitt County, North Carolina that do match this Tidewater individual.

At the beginning of the DNA project, the Newberry line began with Isaac Davenport of South Carolina who died in 1749 in Granville, North Carolina. Based on Y-DNA testing we now believe he is the son of Francis Davenport (mentioned in the Northern Davenports). More detail here: Newberry Analysis

We only have a couple Altona Davenports, descendents of Abraham (1714-1789), participants, so we don't have much information yet. They match each other and belong to Haplogroup I1a. Since Abraham was born in England there is a possibility his ancestors acquired the Davenport name from one of the Cheshire branches.

The Unattached line is so named because we have several Davenports, with no known connections, that match each other but not any other Davenport line.

]]>
ROOT Tue, 14 Jan 2020 09:26:52 +0000
Under Construction http://davenportdna.com/details/brochure http://davenportdna.com/details/brochure This page is still a work in progress.

Please check back later.

 

The DavenportDNA site is now in its third major restructuring since the founding of the Davenport Surname Project in January, 2003. The software has become outdated and it was necessary to take advantage of all the latest innovations in web technology. Ideally, we would wait until the whole thing was competed before going live. However, going live needed to arrive much sooner than expected, so it is still a work in progress. The majority of the pages are ready. Those that aren’t will have this message. Many of the links may also be invalid, and some pages might look a little odd. But each week should bring more pages completed and links fixed. If you need information from one of the incomplete pages, feel free to contact the administrator at info @ DavenportDNA.com.  Thank you for your patience.

]]>
ROOT Fri, 12 Feb 2016 11:08:16 +0000
DNA Comparisons Between Lines http://davenportdna.com/results/comparing-lines http://davenportdna.com/results/comparing-lines

The Davenport Surname DNA Project tests the DNA on the Y-chromosome, which only males have. This Y-DNA is passed down from father to son, generation after generation, virtually unchanged. So, two Davenport's who have a common male Davenport ancestor several generations ago, should have essentially identical Y-DNA.

We test up to 111 "markers" on the Y-DNA and compare their values. The group of values for the markers we test is called a Haplotype. The more similar the Haplotypes are to each other, the closer their common ancestor is likely to be.

Occasionally one of the markers will have a "mutation". Mutations are neither good nor bad, they are just a random minor change in the Y-DNA. They do not affect anything, but can be very useful in genealogy.  Once a mutation occurs, it is passed down to all future male Davenport descendents.

When we have participants descended from the same line and find mutations, we do not know which individual branch actually had the mutation, and which had the "original" value. So we try to determine what the "modal", or more accurately, the "ancestral Haplotype" of the line is. In other words - the Y-DNA Haplotype of the progenitor - the first Davenport in the line (that we know of). Then, instead of comparing to each other, we compare to the modal. We do this by "triangulation". For example, assume Thomas had three sons - Charles, Samuel, and John. We test a descendent of Charles - Christopher - and find he has a value of 16 on marker xyz. A descendent of Samuel - Scott - also has a 16 on xyz. Therefore, we can conclude the modal for xyz is 16, because if either participant had a mutation between himself and Thomas, then he would not have the same value (16) as the other participant. If, however Christopher had a 16 and Scott had a 15, then we don't know which, if either, was the modal. So we triangulate, we test James, a descendent of the third son John. James also has a 16. Therefore, since it is much more likely that there was just one mutation somewhere between Samuel and Scott, than two mutations in two branches moving the same direction (15 to 16, instead of 15 to 14), then we assume the modal is 16.

The first chart below compares the modal Haplotype for each of the North American lines that we have tested so far. Only the Rev John, Albemarle, Thomas of Dorchester and Captain Richard lines are close enough to be considered related in a recent genealogical time frame.  The Orme modal is what we believe his Y-DNA looked like based on these three American lines, plus several English Davenports with Cheshire origins.

The second chart looks at the "genetic distance" between the various Davenport lines. Further explanation is included.

 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111
Locus393390394391385385426388439389392389458459459455454447437448449464464464464460GATAYCAYCA456607576570CDYCDY442438531578395395590537641472406511425413413557594436490534450444484520446617568487572640492565710485632495540714716717505556549589552494533636575638462452445YGATA463441YGGA525712593650532715504513561552726635587643497510434461435
Kit #  /19 ab   1 2 ab      abcd H4iiaiib    ab    S1aS1b    S1  ab                                         AT                   
  Haplogroup R-S1480
Orme1324151011141212121313291881011112515192915151718111119231515201735371212119151681010810101223231610121215812222013121113111112123615916122626191210131110912121011113012132213101021151913251712152412231810131891211
Thomas1324151011141212121313291881011112515192915151718111119231515191735371212119151681010810101223231610121215812222013121113111112123615916122626191210131110912121011113012132213101021151913251712152412231810131891211
Capt Rich132415101114121211131329188101111251519281515171811111923151520163537111211915168101081010122323161012121581222201312111311111212                                            
Rev John132415101114121211131329188101111251519291515171811111923151519163537121211915168101081010122323161012121581222201312111311111212                                            
Albemarle13241510111412121113132918810111125151929151517181111192215152016353712121191516810108101012232316101212148122220131211131111121235.215916122626191210131110912121011113012132213101021151913261712152412231810131891211
  Haplogroup R-U152
Machinaw1324141011151212121313291891011112615182915151517                                                                                      
Unattach14241410111412121213132917991111251519291415171710121923151518193737121011915168101081010122323171012121681222201412111411111412                                            
  Haplogroup R-L21
Pamunkey13241411111412121213132916910111125151929151517171111192317151817383811121191516810108101112232315101212169122220131211131111121235.214916122726201211121211912121011112912132413101020152013231612 241223189141791311
East Shr142414111114121212131329179101111241419291515161711101919161417173838121211915168101081011122323161012121681222201512111311111212                                            
  Haplogroup R-Z381
Newberry13231412111412121114133017991111251519291415161711101923171517193437121211915168101081010122323161012121581222201312111311111312                                            
James Rv13231411121412121213132917991111241519291516171911111923161517173639131211915168101081010122325161012121481222201412111311121412                                            
Wm Ford132314101113121211131328178101111261519291415171811111923151517163538121211915168101081011122323161012121681223201312111312111312                                            
  Haplogroup R-M269
Tidewater132414101114121212131330189101111251519301515171712121924171517173839121212915168101081010122222161012121581222201312111311111212                                            
New Kent1424141011151212111213281799111125151928151617171110202316151818354111121191516810108101012232315101212158122220131211141111121235      12111212 912121011                           
  Haplogroup I1a
Altona1322141113131114111211291588811231620271214151511919211515162136371210118151581110899122121151012121681326211413111211111211                                            
  Haplogroup J-CTS1460
Humphrey122314101219111411141130198911112614212915151516111120221513171834361110118151681110811912202220101113168122620151211131012121132.2158151225261912121311109141110912291113211410102415201023141116261223189141791411
Locus393390394391385385426388439389392389458459459455454447437448449464464464464460GATAYCAYCA456607576570CDYCDY442438531578395395590537641472406511425413413557594436490534450444484520446617568487572640492565710485632495540714716717505556549589552494533636575638462452445YGATA463441YGGA525712593650532715504513561552726635587643497510434461435
   /19 ab   1 2 ab      abcd H4iiaiib    ab    S1aS1b    S1  ab                                         AT                   

Y-DNA

 


Genetic Distance

The genetic distance or  "closeness" of the DNA results is used to determine if individuals have a common ancestor. For this comparison we are using the Y-DNA 67 marker test. Usually if two people, with the same surname, have an exact 67 of 67 match - they have a 0 (zero) step difference and thus a common ancestor.  If there is a 66/67 match the difference is 1 (one). A difference of 0 thru about 6 and the same surname "is a match".  Under certain circumstances (rare pattern of results) a 7 or 8 step difference might qualify for a match.  It is also possible to have a very large difference because there could be a multiple step difference on one marker - i.e. - marker 447 has 22 for one person and 27 for another making a difference of 5.

The chart below displays each of the Davenport lines and how they compare with each other. Each line is represented by the modal , or believed original, results for that particular line, since some may vary by a step or two. It also displays the "unknown ancestry" Davenports that haven't been placed into one of these lines. To read the chart - find the line/person on the left side and follow across to the column of the line/person at the top to compare to. Example - there is a 64 step difference between the Albemarle and Humphrey lines.

With the exception of the Humphrey and Altona lines and a few individuals - all participants appear to belong to Haplogroup R1b.  This is the most common Haplogroup found in Western Europe which is what was expected since the earliest documented Davenports came from England.

As can be seen so far - only the Rev. John, Albemarle, Thomas of Dorchester and Captain Richard lines (shaded area) have a common ancestor. Several Davenports of known recent Cheshire, England origin also match this group. But, since their results are so similar, they are not listed in the chart below. 

 

 

  Orme Tho Cap Rev J Alb Pam Mac TW New Wm JR ES NKH Una Alt Hum  
Orme   1 2 2 3 20 12 22 24 17 26 27 26 24 74 65  
Thomas 1   2 3 4 17 11 19 21 20 22 20 22 22 73 64  
Capt Rich 2 2   5 6 17 14 21 24 22 24 22 20 24 74 65  
Rev John 2 3 5   3 18 14 20 20 17 23 21 21 23 72 63  
Albemarle 3 4 6 3   21 14 22 23 20 24 23 24 27 73 64  
Pamunkey 20 17 17 18 21   16 19 20 21 22 16 18 24 75 71  
Mackinaw 12 11 14 14 14 16   19 19 20 21 21 22 16 51 39 37 Markers
Tidewater 22 19 21 20 22 19 19   24 29 25 23 30 28 78 69  
Newberry 24 21 24 20 23 20 19 24   24 17 20 20 21 66 61  
Wm Ford 17 20 22 17 20 21 20 29 24   24 21 29 27 69 64  
James Rv 26 22 24 23 24 22 21 25 17 24   19 30 23 74 71  
East Shr 27 20 22 21 23 16 21 23 20 21 19   24 24 69 66  
New Kent 26 22 20 21 24 18 22 30 20 29 30 24   23 74 69  
Unattach 24 22 24 23 27 24 16 28 21 27 23 24 23   68 65  
Altona 74 73 74 72 73 75 51 78 66 69 74 69 74 68   67  
Humphrey 65 64 65 63 64 71 39 69 61 64 71 66 69 65 67    
              37 Mkr                    
  ]]>
ROOT Thu, 29 Oct 2015 08:12:47 +0000
Current Locations http://davenportdna.com/?id=43 http://davenportdna.com/?id=43  

The tables below list where the participants in the Davenport Surname DNA Project currently reside. The number to the left of the location indicates how many Davenport participants are from that area. The Map below helps illustrate how participants are spread around the United States. As we gain more international participants, an additional world map will be added.

  UNITED STATES                
Alabama   Hawaii 5 Massachusetts 1 New Mexico   South Dakota
  Alaska 1 Idaho 3 Michigan 3 New York 4 Tennessee
6 Arizona 4 Illinois 1 Minnesota 16 North Carolina 22 Texas
5 Arkansas 5 Indiana 1 Missississi  1 North Dakota 1 Utah
17 Calofirnia Iowa Missouri 4 Ohio   Vermont
  Colorado Kansas Montana 7 Oklahoma 11 Virginia
3 Connecticut  Kentucky   Nebraska  5 Oregon 8 Washington
  Delaware 3  Louisiana Nevada 5 Pennsu;vania 3 West Virginia
10 Florida    Maine   New Hampshire   Rhode Island 5 Wisconsin
6 Georgia  Maryland New Jersey 5 South Carolina  1 Wyoming
                   

 

 

   ENGLAND / UK    OTHER EUROPE   CANADA    OTHER WORLD
 5 London 1  Bussum, Netherlands 1  Toronto, Ontario 1  Bentleigh, Australia
 1 Sutton, Macclesfield, Cheshire 1  St. Jansklooster, Netherlands 1  Calgary, Alberta 1  Charleville, Australia
 1 Wilmslow, Cheshire 1  Mougins, France 1  New Brunswick, Canada 1  Frankston, Australia
 1 Manchester, Greater Manchester     1  Belleville, Ontario 1  Auckland, New Zealand
 1 Hyde, Greater Manchester            
 1 Whitefield, Greater Manchester            
 1 Shrewsbury, Shropshire            
 1 Daventry, Northamptonshire            
 1 Chesham, Buckinghamshire            
 1 Cambridge, Cambrideshire            
 1 Bishop's Frome, Herefordshire            
 1 Ipswich, Suffolk            
 1 Prestwich, South Ayrshire, Scotland            
               

 

 

 

]]>
ROOT Mon, 19 Oct 2015 08:38:38 +0000
Cross Reference List http://davenportdna.com/lines/xref http://davenportdna.com/lines/xref  

Cross Reference List

Due to the structure of the Davenport DNA Project website - participants listed by Davenport line - it becomes difficult to locate an individual based only on his kit number.  Therefore, this cross reference page was developed. It lists all participants sorted by their kit number. It also includes which line he belongs to and a link to his description on the appropriate Davenport line page.

Kit # Name Line Residence
4877  Gene Davis Newberry Davenports Missouri
7181 William B. Davenport Thomas Davenport of Dorchester Ohio
7447 William Byron Davenport Mackinaw Davenports California
7505 Allen Norman Davenport, Jr. Thomas Davenport of Dorchester Virginia
7555 David Wesley Dennis Miscellaneous Lines North California
7575 Michael A Davenport Tidewater Davenports Georgia
7657 Roger Allen Davenport Albemarle Davenports Indiana
8041 John Scott Davenport Pamunkey Davenports West Virginia
8305 Eugene Clark Devenport (same as 561329) Davenports of Direct English Descent Utah
8666 Douglas Harold Davenport Albemarle Davenports Georgia
8742 Robert Laffolette Butch Devenport Humphrey Davenport of Barbados Pennsylvania
8862 Donald F. Davenport, Jr. Mackinaw Davenports Michigan
9068 Paul James Davenport Newberry Davenports Texas
9108 Ronald Davenport Newberry Davenports Alabama
9146 Duane Leland Davenport Miscellaneous Lines Wyoming
9397 Mr. Francis M. Davenport, III Pamunkey Davenports Virginia
9415 Mr. Harry Augustus Davenport, III Rev. John Davenport Florida
9436 William Jeptha Davenport, M.D. Pamunkey Davenports Calgary, Canada
9573 John Arthur Davenport Humphrey Davenport of Barbados New Jersey
9729 Craig Douglas Devenport Humphrey Davenport of Barbados Wisconsin
10002 Jim Clarence Devenport Newberry Davenports New Mexico
10138 James Runion Loftis, III    
10726 William Daniel Davenport, Jr. James River Davenports Nevada
11120 Wallace Edwin Davenport Pamunkey Davenports Texas
11122 Robert Earl Davenport, Jr. Thomas Davenport of Dorchester California
11192 Donald Clifton (Davenport) Crawford Pamunkey Davenport Texas
11382 Lawrence Davenport Captain Richard Davenport Wisconsin
11481 Paul Ray Davenport Pamunkey Davenports Missouri
11513 Robert Davenport   California
11596 Mr. Peter Paul Raymond Davenport Davenports of Direct English Descent Charleville, Australia
11620 Walter Glenn Davenport Albemarle Davenports North Carolina
11694 Edward Timothy Harrelson, Jr.    
11950 Russell Stearns Davenport, Jr. Thomas Davenport of Dorchester Texas
12576 Warner T. Davenport Pamunkey Davenports California
12628 Carl Wayne Davenport Albemarle Davenports Tennessee
13265 Robert S. Davenport Humphrey Davenport of Barbados Illinois
13434 Charles Davenport Thomas Davenport of Dorchester Flordia
13570 Peter A. Danforth Newberry Davenports California
15181 Martin Robert Davenport Davenports of Direct English Descent Mougins, France
17198 Michael J Davenport Humphrey Davenport of Barbados New York
17323 John Barksdale Davenport Pamunkey Davenports Texas
17685 Mr. Miles Leroy Davenport Fordham Davenports Arizona
19172 Mr. Steven Mitchell Davenport Albemarle Davenports Virginia
19790 Ernest Davenport Davenports of Direct English Descent Auckland, New Zealand
20775 George William Davenport Albemarle Davenports Oklahoma
20793 Sanford Lee Davenport Humphrey Davenport of Barbados Ohio
22162 Charles S. Davenport, Jr. Pamunkey Davenports Missouri
22330 Guy Gale Davenport Albemarle Davenports Florida
22533 Robert L. Davenport Pamunkey Davenport Florida
22623 Mr. Robert Ralsey Davenport Rev. John Davenport California
22696 James Davenport Albemarle Davenports Washington
25163 Arlice Davenport Newberry Davenports Kansas
25725 David Jerome Davenport Miscellaneous Lines Texas
26889 Whitley L. Davenport Pamunkey Davenports California
26932 John Francis Davenport Davenports of Direct English Descent London, England
27166 Mr. Iain Andrew Davenport Davenports of Direct English Descent Bussum, Netherlands
27597 Orval Wilson Overton New Kent / Hanover Davenports Idaho
28279 James Robert Davenport Albemarle Davenports Texas
28945 Mr. Christopher Michael Stone    
29392 Jim E Davenport English Oklahoma
30214 Deja Tacoma Davenport Matching but Unattached Line 1 Michigan
30234 William Hoyt Davenport Tidewater Davenports North Carolina
31214 Kato Lee Davenport Matching but Unattached Line 1 Louisiana
32822 Stephen Davenport Rev. John Davenport Virginia
32864 Joel Anthony Davenport Pamunkey Davenports Arkansas
35200 Robert Howard Davenport Pamunkey Davenports South Carolina
35696 Douglas Earle Davenport Thomas Davenport of Dorchester Connecticut
36674 Robert Lee Davenport Tidewater Davenports Massachusetts
37244 John Bromley Davenport Davenports of Direct English Descent Manchester, England
37246 Milan Davenport Albemarle Davenports Alabama
37248 Charles T. Davenport Albemarle Davenports Arizona
37361 Jon Davenport Newberry Davenports Oklahoma
37512 Ian Frank Davenport Davenports of Direct English Descent Bentleigh, Australia
38294 Billy Gene Davenport Pamunkey Davenports Texas
39759 Joseph Robert Davenport Pamunkey Davenports Texas
41189 David James Davenport Matching but Unattached Line 1 Arkansas
41293 William Lawrence Davenport New Kent / Hanover Davenports Florida
44798 Christopher William Davenport Altona Davenports Kentucky
45408 Charles Clifford Davenport Newberry Davenports Frankson, Australia
46784 Richard Arthur Davenport Newberry Davenports Florida
46926 Robert R Davenport Humphrey Davenport of Barbados New Jersey
47525 Mark Kevin Ellister Matching but Unattached Line 1 Oregon
47538 Henry Bedinger Davenport Altona Davenports West Virginia
48409 Alfred Thomas Davenport, Jr. Pamunkey Davenports North Carolina
48649 Dewitt Shelton Davenport Eastern Shore - William & Comfort Texas
49189 Jack B. Davenport    
49739 Richard Alan Davenport Pamunkey Davenports Georgia
49751 Jeremy James Davenport Davenports of Direct English Descent London, England
50899 Clyde Robert Davenport Thomas Davenport of Dorchester Massachusetts
52798 Warren William Davenport Pamunkey Davenports Connecticut
58147 Jerry Mac Davenport Pamunkey Davenports Texas
64304 James Sheldon Davenport Pamunkey Davenports North Carolina
64354 Frank L. Calkins Humphrey Davenport of Barbados Virginia
68055 Robert Vincent Davenport Humphrey Davenport of Barbados Pennsylvania
70003 Gene Alan Davenport New Kent / Hanover Davenports North Carolina
70488 John Frederick Davenport Rev. John Davenport Arizona
71071 Richard Drake Davenport Humphrey Davenport of Barbados Wisconsin
72415 Peter Malcolm Davenport Humphrey Davenport of Barbados Virginia
73569 Robert Charles Davenport Davenports of Direct English Descent Herefordshire, England
74561 David Anthony Davenport Miscellaneous Lines North Carolina
75494 Joubert Davenport Humphrey Davenport of Barbados Arizona
75989 Robert William Davenport New Kent / Hanover Davenports Illinois
76232 Kenneth Raymond Davenport Pamunkey Davenports Oregon
78802 Kyle David Davenport Matching but Unattached Line 1 Texas
80196 Paul Leonard Davenport, Jr. Thomas Davenport of Dorchester Massachusetts
80768 Leonard Allen Davenport Rev. John Davenport Arkansas
81012 Jason Wyatt Davenport Newberry Davenports North Carolina
81033 Sarah Francis Harrelson    
81037 Michael Wayne Dennis Miscellaneous Lines Washington
83012 Charles Carlyle Davenport Pamunkey Davenports Georgia
84505 Keith Davenport Humphrey Davenport of Barbados California
84698 Ronald Lee Davenport Newberry Davenports South Carolina
84777 Ervin Davenport Newberry Davenports Georgia
85423 Marc Davenport Fordham Davenports California
86759 Zollie Carrol Davenport Tidewater Davenports North Carolina
90389 William Randolph Davenport Pamunkey Davenports Kentucky
90949 Herman Reedy Davenport Miscellaneous Lines Florida
91983 Elizabeth Jean Harrelson    
92200 Daniel Christopher Davenport Rev. John Davenport South Carolina
92671 Rodnie Kenneth Davenport New Kent / Hanover Davenports Illinois
92883 Robert Glen Davenport New Kent / Hanover Davenports Kentucky
94058 Marshall Thomas Davenport Fordham Davenports Belleville, Ontario, Canada
94297 Richard Davenport Thomas Davenport of Dorchester California
95214 Charles B. Davenport Newberry Davenports Texas
96008 Mark Alan Davenport New Kent / Hanover Davenports North Carolina
96117 Michael Davenport Captain Richard Davenport Oregon
96247 Mr. Wempford Ray Williams    
96423 Ms. Vergie Barber Deantonio    
96645 Robert Davenport Humphrey Davenport of Barbados South Carolina
100210 Michael Charles Davenport Newberry Davenports Wisconsin
100780 Don Davenport Humphrey Davenport of Barbados New York
101618 Urban Stafford Davenport James River Davenports Flordia
101839 Mark Otto Debenport Newberry Davenports  
102776 Jerry Haskell Davenport Albemarle Davenports Tennessee
104249 Dale Francis Brazil    
104868 Donald M Davenport   California
105437 K Davenport Albemarle Davenports South Carolina

110802

Harlan Whitfield Davenport Pamunkey Davenports California

115478

James Davenport Pamunkey Davenports New York

119190

Roger Davenport Albemarle Davenports Massachusetts
123928 Otha Davenport Newberry Davenports Ohio
130561 Richard K Davenport James River Davenports Maryland
146089 Robert S Davenport Davenports of Direct English Descent London, England
146274 Martin Davenport Pamunkey Davenports Michigan
146294 Thomas Davenport    
146706 Daniel Davenport Eastern Shore - William & Comfort California
149276 Robert Davenport Pamunkey Davenports Oklahoma
149812 Mark J Davenport Pamunkey Davenports Washington
151393 William Davenport Eastern Shore - William & Comfort Washington
151475 Robert Davenport Davenports of Direct English Descent Connecticut
151641 Cliff Davenport Miscellaneous Lines  
156245 Thomas Q Davenport Pamunkey Davenports Georgia
156926 Richard Davenport Thomas Davenport of Dorchester Texas
157823 Joseph Davenport Pamunkey Davenports Virginia
159766 Paul Davenport Pamunkey Davenports Texas
161500 James E Davenport Newberry Davenports Virginia
162703 William Davenport Newberry Davenports Mississippi
164084 David Davenport Humphrey Davenport of Barbados Washington
164689 Donald Davenport Altona Davenports Indiana
166661 Craig T Davenport Miscellaneous Lines California
166955 Merle Davenport Humphrey Davenport of Barbados Pennsylvania
167140 David B Davenport Matching but Unattached Line 1 Texas
170345 Thomas Davenport Davenports of Direct English Descent Arizona
172472 Jim Leon Davenport James River Davenports Oklahoma
176002 Richard Thurston Humphrey Davenport of Barbados Washington
177972 Joseph Davenport Humphrey Davenport of Barbados California
179199 James G Davenport Albemarle Davenports Virginia
182084 Len Davenport Davenports of Direct English Descent Whitefield, England
182085 Peter Davenport Davenports of Direct English Descent Wilmslow, England
183031 Keith Davenport Davenports of Direct English Descent Hyde, England
186554 David Davenport Davenports of Direct English Descent Sutton, Macclesfield, England
188040 Michael Davenport Altona Davenports Ohio
188275 Paul Davenport Davenports of Direct English Descent Netherlands
191029 Donald Davenport Albemarle Davenports Texas
195343 William Davenport Humphrey Davenport of Barbados Pennsylvania
196417 Ian Davenport Davenports of Direct English Descent Chesham, England
201378 Allen M Davenport Davenports of Direct English Descent North Carolina
202730 Gene L Davenport New Kent / Hanover Davenports Arizona
205835 Roger W Davenport   Arkansas
209585 Levi Davenport Thomas Davenport of Dorchester Massachusetts
209655 William G Davenport Albemarle Davenports Oklahoma
212912 Timothy E Davenport Eastern Shore - William & Comfort Missouri
214410 William Davenport Newberry Davenports Texas
217304 Ernest Davenport Albemarle Davenports Virginia
217630 Steven A Davenport Humphrey Davenport of Barbados New Jersey
218523 William Ferling Pamunkey Davenports Indiana
222660 William M Davenport Albemarle Davenports West Virginia
223368 Donald F Davenport Miscellaneous Lines Louisiana
224563 Scott A Layton   Pennsylvania
225251 Stephen A Davenport Captain Richard Davenport California
225478 Howard E Davenport Albemarle Davenports Texas
225859 Stephen Davenport   Washington
229564 Robert L Davenport Miscellaneous Lines Florida
232735 John G Davenport Altona Davenports Minnesota
234289      
235948 Rodney D Davenport New Kent / Hanover Davenports Tennessee
236569 John B Davenport Thomas Davenport of Dorchester Minnesota
238357 Russell E Davenport Albemarle Davenports Virginia
239118 Randy Currier Albemarle Davenports Arkansas
239371 Bruce P Davenport Matching but Unattached Line 1 Indiana
242382 Luther A Davenport Miscellaneous Lines Kentucky
248370 Guy Lawton   Shropshire, England
249782 John M Davenport Altona Davenports Illinois
250489      
250607 Clayton T Davenport Albemarle Davenports Tennessee
252475 Danny D Davenport Matching but Unattached Line 1 Oklahoma
259896 Thomas D Davenport Albemarle Davenports Louisiana
261605 Roland Davenport New Kent / Hanover Davenports Washington
263722 Colin R Davenport   Northamptonshire, England
268420 Dennis R Davenport Humphrey Davenport of Barbados Indiana
268457 Dennis R Davenport Fordham Davenports Montana
268668 Roy W Davenport Newberry Davenports North Carolina
279591 Arthur Burley   Michigan
283365 Alan P Davenport Newberry Davenports Oregon
284636 Lawrence Brooks Pamunkey Davenports California
285294 Nigel I Davenport   London, England
289278 Denis M Davenport Davenports of Direct English Descent Ipswich, England
296198 Christopher L Davenport Albemarle Davenports North Carolina
299590 Michael Davenport   Toronto, Canada
299591 Milt Davenport Albemarle Davenports Virginia
299592 Philip Davenport Albemarle Davenports North Carolina
299593 Frank Davenport Albemarle Davenports North Carolina
307287 Fred Davenport Newberry Davenports Texas
307611 Travis L Davenport Newberry Davenports Texas
310198 Carlton Davenport Albemarle Davenports North Carolina
313194 Harvey J Davenport   Peterborough, England
315832 Nathan A Davenport   North Dakota
330733      
336421 Joshua S Davenport Newberry Davenports Iowa
338011 Jeff McQuerrey Matching but Unattached Line 1 Maryland
343607      
347896 Robert G Davenport Eastern Shore - William & Comfort Florida
352619 Travis Davenport New Kent / Hanover Davenports Oregon
352849 Raymond Davenport   Ponoka, Alberta, Canada
358979 Roger J Davenport Davenports of Direct English Descent Prestwich, England
373817 Roger Davenport Davenports of Direct English Descent London, England
384324 Gary Davenport Humphrey Davenport of Barbados Pennsylvania
391686 Shawn Davenport Humphrey Davenport of Barbados Pennsylvania
404276 Dennis Davenport Newberry Davenports Texas
406128 Ramsey Davenport Thomas Davenport of Dorchester Pennsylvania
410575 David Davenport Fordham Davenports Illinois
415779 Joel Davenport Albemarle Davenports Tennessee
428565 Leon Davenport Humphrey Davenport of Barbados Oregon
445939 Frank Davenport Pamunkey Davenports Illinois
484092 Bryce Edward Davenport Pamunkey Davenports Washington
494039 Spencer Davenport    
509341      
517979 Robert Birtles Davenports of Direct English Descent McKellar, Austraila
522451 Kenneth Davenport Humphrey Davenport of Barbados California
534068 Dennis Davenport Albemarle Davenports Arkansas
542063 Douglas Davenport Newberry Davenports Georgia
544377      
544378      
559514 Vernon Davenport Thomas Davenport of Dorchester Michigan
561329 Eugene Davenport (same as 8305) Davenports of Direct English Descent Utah
596407 Dale Davenport Albemarle Davenports Indiana
600375 Ross Davenport Humphrey Davenport of Barbados Michigan
610239 GaryDavenport Newberry Davenports Virginia
657099 Sterling Davenport   Arizona
715559 John E Davenport Albemarle Davenports  North Carolina
718002 Russell Davenport   London, England
732005 Paul T Davenport   Tours, France
749818 Frank H Davenport   Michigan
828666 Robert L Davenport Newberry Davenports  
848891 William V Davenport    
855786 Lian P Davenport Davenports of Direct English Descent  
873124 William Rueben Davenport Albemarle Davenports  
873261 Joel R Davenport Pamunkey Davenports  
877893 Cash O Davenport Pamunkey Davenports  
       
       
A0001 Gene Davenport Eastern Shore - William & Comfort  
B9496 Donald D Davenport Albemarle Davenports Flordia
B48513 Gary Davenport    
B236492 Seth S Davenport New Kent / Hanover Davenports  
IN37124 Darryl K Davenport Davenports of Direct English Descent Washington
IN54413 Colin N Davenport Davenports of Direct English Descent  
       
       
N34998 Robert Douglas Danforth, Sr.   Minnesota
       
       
N55746 Mr. James Everett Davenport Eastern Shore ?  Michigan
N67544 G Davenport Captain Richard Davenport Wisconsin
N113018 Billy T Davenport Eastern Shore - William & Comfort Texas
N197992 David D Davenport   Alaska
N239204 Julian Davenport   Georgia
W001 Woodford New Kent / Hanover Davenports  
W006 Woodford New Kent / Hanover Davenports  
.W008 Woodford New Kent / Hanover Davenports  
.W014 Woodford New Kent / Hanover Davenports  
.      
]]>
ROOT Sun, 18 Oct 2015 04:11:30 +0000
Paternity Event http://davenportdna.com/9-project-details/28-paternity-event http://davenportdna.com/9-project-details/28-paternity-event What is a “Paternity Event”?

You may see the phase "paternity event" used periodically on this website. What does it mean? For our purposes it applies to a birth in which a boy received his Y-chromosome from one man and his surname from another. In other words the reported father is not the biological father.

This is a subject we need to be aware of during our search for connections through DNA. The Y-DNA is passed down from father to son, generation after generation. There is an occasional mutation but basically this DNA remains unchanged. That is why we use it. A male living today will have essentially the same Y-DNA that his direct male line ancestor did 10, 20, or more generations ago. Two males with a common ancestor long ago should have matching Y-DNA.

Sometimes we find two well documented lines tracing back to the same ancestor, but their Y-DNA doesn’t match. There are three explanations:

1.  The documentation was wrong – which is common.

2.  The DNA test results are wrong – which is rare, but does happen. There could have been a clerical error when recording results, contamination, etc..

3.  There was a paternity event. Somewhere up the male line there was a “break”.  No biological connection between a father and son. We don’t know when – it could be two generations ago. It could be ten generations ago. As a result the Y-DNA actually comes from a different line than what we were expecting.

There are many possible explanations for a paternity event. Below is a list of ten, which is an edited version of what was originally posted by Anne W. Nelson.

1.  A woman who was widowed in Colonial days often remarried quickly -- life was hard and in those days women needed someone to provide for them economically.  If she was pregnant from her first marriage at the time of her second marriage, the child would be recorded as the child of her second husband. 

2.  Women died far more often in childbirth in Colonial times and earlier than they do today.  For various reasons, the father might not have felt capable of raising an infant, so the infant might have been raised by the mother's sister or brother, or even the father's sister and her husband.

3.  People died from illnesses we take two aspirin for today, from badly preserved food, from logging and mining accidents, from farm accidents, from being thrown from horses, from drowning in floods, from hurricanes collapsing their homes, in fires, etc.  Family or even neighbors would "take in" orphaned children and raise them as their own.

4.  Men with no children might give an apprentice their name.  Or their son-in-law might adopt the surname. 

5.  Inheritance of a mother's family fortune might prompt the adoption of the mother's maiden name.

6.  A married woman left on an isolated farm might be subjected to rape. The child would legally be the husband's when born inside the marriage.

7.  People changed their names when they moved to escape a past -- sometimes that was simply the result of running away from an indentured servitude situation. Or perhaps they had had a disagreement with their father and took another name.

8. A married women may have had an affair with a neighbor or some other “visitor” and the resulting son was raised as if he was her husband’s child.

9.  Even up to recent times, legally, formally adopted children often weren't told they were adopted.  If a man is tested for DNA, his father might well have been adopted and he wouldn't know it.  Again, while some of these children might be the result of illegitimacy, some were also legitimate children given up by poor families or widows.  We have examples of this as recently as the Depression, during which many parents gave up their children rather than watch them starve to death.

10. We are rapidly approaching the point at which people who are the result of sperm donor artificial insemination may be signing up as DNA participants and they may not know their parents took this route to have them.

]]>
ROOT Wed, 04 Nov 2015 10:29:37 +0000
DNA Choices http://davenportdna.com/details/choices http://davenportdna.com/details/choices

Although the Davenport Surname DNA Project is geared toward following the Y-DNA down the various Davenport lines, that doesn't mean that it is the only choice available. Below is a brief description of the types of DNA that can be used for genealogy. Each has it's own use, so care should be taken before ordering any such test. 


Y-DNA

The primary test used in the Davenport Surname Project is the Y-DNA test. We test a small portion of the DNA on the Y chromosome, which only males have. This Y-DNA is passed down from father to son, generation after generation, virtually unchanged. So the Y-DNA of a Davenport male today should be nearly identical to his male ancestor many generations ago. Thus, by comparing two individuals, we can determine if they have a common ancestor. It works very well.

Over the years we have tested well documented male descendants of the various Davenport lines, and have been able to establish a base signature or “Haplotype” for each. The Haplotype for a Rev. John Davenport descendent is very different than a Humphrey of Barbados descendent. They are both different from the Newberry Davenport’s, and so on. The Y-DNA of most male Davenports will match one of the dozen or so major Davenport lines.

There are two types of Y-DNA that can be tested. Short Tandem Repeats or abbreviated to STR, and Single Nucleotide Polymorphism (SNP), pronounced snip,  The standard Y-DNA tests we use involves STR testing. We can test on 25, 37, 67, or 111 “markers”. The values for the markers are compared between two males and usually the more that match, the closer they are related.

SNP testing is used to determine Haplogroups – a much broader method of categorizing Y-DNA. The results of a SRT test will usually report a pretty accurate estimate of what the Haplogroup is too, and with that information possibly zoom in on a particular world region where the line may have originated. But the Haplogroup estimate is just that - based on others who have had deeper SNP testing and have STR results that are similar to yours - this is what we think your Haplogroup is. In most cases, it is possible to refine the SNP test to a much more specific sub-Haplogroup. Think of it like a tree, with you being very small and climbing to a particular leaf - take the third branch up > seventh branch on the left > second branchlet on the right > fourth twig on the right > third twig on the right > first leaf on the left. You have to follow a specific path of SNP's to get to your leaf or terminal SNP (sub-Haplogroup).  There are exceptions, but the original Haplogroup estimate is the equivalent to the first branch. So taking a Haplogroup Deep Clade may be interesting and will allow you to zoom down to a much more recent SNP, but it is still not that useful in genealogy - yet.

Now, with recent advances in technology, there has been a phenomenal increase in the discovery of new SNP"s. FTDNA has a Big-Y test that looks at over 35,000 SNP's. It will soon be possible to distinguish families by their unique SNP's - veins in the leaf.

Important - Before ordering a SNP Deep Clade or Big-Y test, contact the project administrator. If someone in the same line has already tested, another may not be necessary. It is likely the results will be identical.


 

mtDNA

Mitochondrial DNA (mtDNA) is another form of DNA that is commonly tested.  Everyone has mtDNA, but only females can pass it on to their children. So, the mtDNA in each person is from their mother and it is passed down virtually unchanged.  Therefore, an individual's mtDNA would be the same as their mother, her mother's mother, and so on, generation after generation. Like Y-DNA, which follows a straight male line, the mtDNA follows a straight female line.

It is unlikely anyone will find a missing ancestor or prove a connection via mtDNA. Due to the slower mutation rate, an exact match would only mean there was a common ancestor possibly within the last few thousand years. It is also much more difficult to track a straight female line. Women tend to take their husband's surname at marriage, therefore there is a name change each generation. However, the test is useful for disproving an ancestor. If two individuals had different mtDNA - they did not have a recent common female ancestor. It is also an indicator of where ancient ancestors may have resided. Haplogroups A, B, C, D, and X are common for Native American, H is very common in Western Europe, etc...

Our testing company, FTDNA, offers two levels of mtDNA testing. The mtDNA+ test captures information from selected bases on the mtDNA molecule. This is essentially just enough to determine the Haplogroup and can disprove a connection. The mtFull Sequence test looks at all 16,569 locations in the mtDNA. This additional information can help zoom in a little deeper into the Haplogroup and possibly more recent deep ancestry. Again, it is probably not going to help in making connections, but exact matches increases the probability.

Some of our male Y-DNA project participants also took the mtDNA test. We have also had many females test too. It doesn't relate to the Davenport surname, but as a courtesy, they are listed here: mtDNA Results


aDNA

The third type of testing looks at the “autosomal” DNA.  Unlike the Y-DNA or mtDNA, the autosomal test looks at the DNA you get from both of your parents. FTDNA calls it their Family Finder test. It cannot be used to compare to Y-DNA or mtDNA. However, it can be very useful when looking for connections on both sides of the family. You get about half of the aDNA from your mother and about half from your father. Since they each get half from each of their parents, that means you receive about 1/4 from each of your grandparents - or 1/8 from each g-grandparents - or 1/16 from each gg-grandparent. As you can see, the aDNA from one individual becomes more "diluted" for each generation. Realistically, it can be used back to about five generations, but it can still be very helpful in the more recent genealogy on all sides of the family.

It is important to remember that Y-DNA, mtDNA, and autosomal DNA are all different and are not interchangeable. A Y-DNA Haplogroup H is not the same as a mtDNA Haplogroup H.

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In the News http://davenportdna.com/details/news http://davenportdna.com/details/news  

Davenport Gathering 2013

Edenton, North Carolina

August 23-25, 2013

The 2013 Davenport Gathering took place in Albemarle Davenport territory in Edenton, North Carolina, with over 60 in adendance. 

Picture of Davenport Gathering

Family reunion 383 Years on

Leicester Mercury Newspaper - Leicestershire, England

April 6, 2007

The Albemarle Davenports of North Carolina have a very close Y-DNA match to Richard Davenport (d. 1624) of Wigston, Leicestershire, England. So descendents from both sides convened in Leicestershire to search for a connection, plus more. This article covers that reunion.

  LeicesterMercury Apr 2007.jpg

Paving the way with DNA  by Edwin M. Knights

Family Chronicle Magazine

Jan/Feb 2007

Edwin gives a brief introduction about using DNA testing in genealogy and then passes the pen on to five genealogists to write about their own DNA project. The Davenport project was one of them. 

Family Chronicle Jan 2007.pdf

Davenport Surname DNA Project by Ian Davenport

Cheshire Ancestor

Sept 2006 - Page 24

Ian discusses the DNA project, some success stories, and his quest for a match.

Cheshire Ancestor Sept 2006.jpg

DNA Projects: What are they and what can you expect? by Susan Meates

Family Chronicle Magazine

Sep/Oct 2006  -  Page 40-43

In a four page article, Susan gives a good description of what DNA testing involves, and what it can do for genealogy.  Page four includes a sample of the successes a surname project can have using the Davenport Surname DNA project as an example.

Family Chronicle Sept 2006 - Page 4.pdf

DNA Studies in Process

New England Ancestor Magazine

    published by the

New England  Historic Genealogical Society

Vol. 7,  No. 1, Winter 2006 - Page 58

A new section in the magazine announcing DNA projects.

NEHGS Jan 2006.pdf

 
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