Proof of descent - Triangulation


Triangulation of Billy Butler with our family

We have DNA matches between: and these four people in my family:

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