Ambrose R. Davenport was born in Virginia in 1771. He joined the army under General (Mad Anthony) Wayne and arrived in Mackinaw, Michigan in 1796. He married Elizabeth and they had six (?) children – Ambrose, William, Henry, Nancy, Caroline, and Susan. In 1812 after the British took over Fort Michilimackinac, Ambrose was deported to Detroit for refusing to renounce his American citizenship. Ambrose returned to Mackinaw in 1815 where he remained until he died in 1858. His many descendants settled in Mackinaw, Wisconsin, and Illinois. Known as the Mackinaw Davenports.
The Mackinaw line matches an English Davenport male who traces his ancestry through the Chorley branch of the Cheshire line. No connection has been found yet.
Links
Listed below are some of websites dedicated to the Mackinaw Davenport. Each represents the complete line or information about its progenitor. If you know of additional websites that might fit this same criteria – please contact the administrator at: info “at” davenportdna.com
| The Yankee Rebel Tavern | http://www.yankeerebeltavern.com/whowashe.html |
| A good place to expand your research is the Davenport Archives website. It contains hundreds of Davenport related documents, photos, trees and includes lists of researchers and their interests. | http://DavenportArchives.com |
Mackinaw Davenports
Relationship Tree – How the participants are related.
The following are the known male branches of the Mackinaw line. For our purposes a branch would begin with the sons of the 1st generation. If there was only one son then we would start with the sons in the 2nd generation and so on. We would like to test at least one individual from each branch.
| wdt_ID | wdt_created_by | wdt_created_at | wdt_last_edited_by | wdt_last_edited_at | 1st Generation | 2nd Generation | 3rd Generation | 4th Generation | Notes | Kit |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | wbdave@aol.com | 02/28/2026 11:48 PM | wbdave@aol.com | 02/28/2026 11:48 PM | Ambrose 1771-1858 | Ambrose 1801-1879 | Henry L. 1828-1912 | George G. 1873-1910 | 8862 | |
| 3 | wbdave@aol.com | 02/28/2026 11:49 PM | wbdave@aol.com | 02/28/2026 11:49 PM | Ambrose 1771-1858 | William 1803-1875 | ||||
| 14 | wbdave@aol.com | 02/13/2026 01:04 AM | wbdave@aol.com | 02/28/2026 11:50 PM | Ambrose 1771-1858 | Henry 1805-1847 |
Y-DNA Test Results
| The descendants of Ambrose Davenport belong to Haplogroup R-BY6682 – Note: The Y-DNA of the Mackinaw Davenport line is very similar to two English participants who descend from the Chorley branch of the Cheshire line. This means that these groups are all related somehow. To see how the Mackinaw Y-DNA compares to the others, you can visit the English page here: Davenports of Direct English Descent These are the Y-DNA results to-date of the participants descended from Ambrose Davenport. The different row colors represent the separate branches of the line. Click on the Kit # to view more information about the individual Davenport linage. Newer results have a purple block to the left of the kit number. The Modal haplotype is what we believe the Y-DNA of Ambrose Davenport looked like based on current results. Red and blue cells show where an individual varies from the modal. Red indicates movement upward, while blue downward. Combined pink cells represent “connected” markers where the actual difference is counted as one. |
The link below will bring up a large spreadsheet like listing of the results of all the Projects Y-DNA STR Results. The Mackinaw line is in Group 35.
To get the best view of your results and how they compare with others in your line, it will be necesary to view them on our public page at FTDNA. So follow these instructions.
- Go to this Full Chart FamilyTreeDNA – Davenport Surname DNA Project. This should open a new page and tab, so you can still return to this page if needed.
- In the heading on the left change the first two boxes to match These:

3. Type in “35” in the third box, and click on the magnifier.
This should bring up the result of your subgroup – 35 Mackinaw – Ambrose Davenport
Participants
The following people are participating in the Davenport Surname DNA Project. You may view more detail for some by clicking on the link in the Ancestor column.
| Branch | Kit # | Participant | Current Residence | Earliest known Ancestor plus more |
|---|---|---|---|---|
| Ambrose > Ambrose | 8862 | Donald F Davenport Jr | Michigan | Mackinac Island Michigan Davenports. Ambrose Davenport (1771-1858) > Ambrose > Henry L > William George > Harold Lawrence (1904-1973). |
| Other / Unknown | 7447 | William Byron Davenport | California | William Davenport of Troy, NY (b. 1839 in Ireland) > Byron L. > William J. (b. 1900 in California) |
| English | 186554 | David John Davenport | England | A Chorley Davenport. Henry (1607-1664) > Henry (1644-1698 > Henry (1677-1731) > Sharrington (1704-1774) > Edward (1744-1812) > Edmund Sharington (1778-1842) > William S. (1808-1871) > Vivian (1843-1916) > Vivian Hugh (1876-1951) [Note: This participant is also listed on the English page.] |
| 373817 | Roger Davenport | England | James Davenport (1680-?) > Saunders (1720-1778) > Saunders (1748-?) > Philip Saunders (1779-1850) > Philip Saunders (1815-1898) > Benjamin Stocks (1848-1902) > Hebert (1879-1958) > Jack (1911-2009). This line primarily based in London. | |
| 544378 | John A Davenport | England | Possibly Jonathan Davenport (1710-1766) > Jonathan Davenport -(1731-1795) > Jonathan (1760-1824) >Matthew (1804-1865) > Matthew (1841-1908) > Walter Percy (1881 Rainow, Cheshre - 1930). First several generations based in Bosley, Cheshire. |
