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 descendents 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.


Listed below are some of websites dedicated to the Mackinaw Davenports.  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"

The Yankee Rebel Tavern

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.



Mackinaw Branches

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 lease one individual from each branch. The red highlighted entries are branches for which we do not have test participants. Of course we will accept any Davenport participants but especially need the non-highlighted branches. 

If there are additional branches not listed or other changes need to be made - contact info "at"

1st Generation 2nd Generation 3rd Generation 4th Generation Notes Kit #
Ambrose 1771-1858 Ambrose 1801-1879 Henry L. 1828-1912 George G. 1873-1910 8862
Ambrose 1771-1858 William 1803-1875
Ambrose 1771-1858 Henry 1805-1847


 Y-DNA Test Results


The descendents of Ambrose Davenport  belong to Haplogroup R-U152
Click here to download an Excel file of these Y-DNA results

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 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 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.   To email the participant, use the kit # followed by @ and then 

Kit #


Current Residence

Earliest Known Ancestor plus more

8862 Donald F Davenport Jr Michigan

Mackinac Island Michigan Davenports. Ambrose Davenport (1771-1858) > Ambrose > Henry L > William George > Harold Lawrence (1904-1973).

7447 William Byron Davenport California William Davenport of Troy, NY (b. 1839 in Ireland) > Byron L. > William J. (b. 1900 in California)
 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.]

Roger Davenport


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.



 Other Surnames