Proof of descent - Triangulation
Triangulation of Billy Butler with our family
We have DNA matches between:- Billy Butler, descendant of Belinda Yielding (bapt 1758), sister of Millicent Agnes Yielding.
- Frank McGrath, descendant of George Cashel (born 1807).
- Niall Humphreys, descendant of George Cashel (born 1807).
- Donal Duggan, descendant of George Cashel (born 1807).
- John Lavelle, descendant of George Cashel (born 1807).
The DNA matches are at the same location on Chromosome 5.
Let us triangulate everyone with everyone.
We will find that everyone matches everyone at positions
31,997,869 to 38,728,218.
Three 1st cousins
These three are 1st cousins of each other. So they have lots of matches.All of these match at positions 31,997,869 to 38,728,218.
DNA match of Donal Duggan and Niall Humphreys on Chromosome 5.
DNA match of Donal Duggan
and John Lavelle
on Chromosome 5.
DNA match of
John Lavelle
and Niall Humphreys
on Chromosome 5.
Frank McGrath
Frank McGrath is separate to the three 1st cousins, but still very closely related.All of these match at positions 31,997,869 to 38,728,218.
DNA match of Frank McGrath and Niall Humphreys on Chromosome 5.
DNA match of Frank McGrath
and Donal Duggan
on Chromosome 5.
DNA match of Frank McGrath
and John Lavelle
on Chromosome 5.
Billy Butler
Billy Butler matches the four people above.All of these match at positions 31,997,869 to 38,728,218.
DNA match of Billy Butler and Frank McGrath on Chromosome 5.
DNA match of Billy Butler
and Niall Humphreys
on Chromosome 5.
DNA match of Billy Butler
and Donal Duggan
on Chromosome 5.
DNA match of Billy Butler
and John Lavelle
on Chromosome 5.
Conclusion
- This is the same segment. Note even the same start and end locations.
- Billy Butler must be related to us through the common ancestor of these people, which is Blennerhassett Cashel (they descend from two different wives).
-
As discussed elsewhere,
any link to Blennerhassett / Butler of Co.Kerry
through Blennerhassett Cashel is realistically a
link through George Cashel.