Comments on Thomas Davis
Copying over from https://www.wikitree.com/g2g/1696321/comments-on-thomas-davis
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On 28 Jan 2024 Daryl Davis wrote on Davis-1090:
My name is Daryl Davis and I have taken the big 700 Y-DNA test. My results are backed up with documentation to a common ancestor with two other testers (both tester have taken a Y-111 DNA test). I have a two step genetic distance with a common ancestor of Moses Davis (1657-1724 Oyster River, N.H. ) and a five step genetic distance with a common ancestor of John Davis ( about 1550-1626 Acton-Turville South Gloucestershire England.) Also I have one step genetic distance with an unknown common ancestor about 1750. Again this other tester did a Y-111 DNA test. I did a SAPP test comparing my DNA STRs with The proposed descendants of Thomas Davis (1603-1683). The best results of the seven testers compared to mine was an eighteen step genetic distance. This would put a common ancestor hundreds of years before John Davis of Acton Turville. My opinion is that the DNA of the proposed ancestors of Thomas Davis son of John Davis is proven that they are not descendants of that Thomas Davis.
WikiTree profile: Thomas Davis
davis
asked Jan 28 in Genealogy Help by Daryl Davis G2G Crew (430 points)
edited Jan 29 by Daryl Davis
2 Answers
+4
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Clearly the proposed descendant of Thomas Davis (1603-1683) is not descended from John Davis (1562-1626), but the question is where is the line broken?
You mention 'a descendant' and 'seven testers', so I am not clear if there are multiple descendants of Thomas Davis involved.
If there are seven of them, then who is their documented most recent common ancestor and are their genetic distances compatible with that? The line from that ancestor to John Davis has a break in it, but the specific father-son relationship between John and Thomas is only disproved if the MRCA of the seven is Thomas.
If there is only one tester, then the break in the line could be in any generation between John Davis and the tester.
answered Jan 28 by Andrew Millard G2G6 Mach 8 (89.4k points)
www.familytreedna.com/public/Davis?frame=ycolorized
Davis/Davies/David - Y-DNA Colorized Chart
Grouped under
John Davis of Newbury, Mass.
Kit # Real kit numbers removed for security reasons
Male 1 Y-67 John/Thomas Davis Essex Co Ma 1635 England R-M269
Male 2 Y-37 Edward Davis b 1757 d 1807 MA CT Unknown Origin R-M269
Male 3 Y-25 Cornelius Davis, MA. United Kingdom R-M269
Male 4 Y-25 John/Thomas Davis Essex Co MA 1635 England R-M269
Male 5 Y-37 Thomas Davis b1603 - Haverhill, MA United Kingdom R-M269
Male 6 Y-37 John/Thomas Davis Essex Co MA 1635 England R-M269
Male 7 Y-67 adopted Unknown Origin R-M269
The above are the proposed descendants of Thomas Davis that I ran a SAPP test on to compare our STRs
SAPP test genetic distance with myself and two of the Y-67 testers
Myself Y-111 Male 1 Y-67 Male 2 Y-67
Myself Y-111 111 22 GD 18 GD
Male 1 Y-67 22 GD 67 4 GD
Male 7 Y-67 18 GD 4 GD 67
If you belong to FamilytreeDNA you can view the Davis/Davies/David at the above web site
commented Jan 29 by Daryl Davis G2G Crew
edited Jan 29 by Daryl Davis
The problem with these results is that they report the most distant known ancestor, not the most recent common ancestor. You cannot tell from the public results whether they all descend from different sons of Thomas, or some other permutation such as they all descend from one great-great-grandson. Without their genealogies it is impossible to tell which generations of the paper trail are confirmed by the DNA and which might be the one where the paper trail is wrong.
