Triangulation help

+2 votes
174 views

I have an ancestry DNA match that I'm hoping to use to confirm a relationship with my great-great-grandmother. However, the wording of the DNA confirmation help page has me slightly confused. It says: 

"If you know the relationship to be third cousins or closer through traditional genealogy, and the match at AncestryDNA in the "3RD COUSIN" group or closer...."

I know my match to be a half 1C2R; sharing 51 cM over 3 segments. Looking at the DNA painter utility for estimating relationships based on shared CM, there is a 7.19% chance that a relationship with this amount of DNA would be 1C2R, which is low, but still possible. However, the match estimate at ancestry is that we are 4th cousins, not third.

Is this a relationship that I can mark as "confirmed with DNA" without triangulating? Or do I need to triangulate given Ancestry's "further than third cousin" estimate?

 

in Genealogy Help by John Trotter G2G6 Mach 3 (39.3k points)

Please log in or register to answer this question.

Related questions

+12 votes
2 answers
+2 votes
1 answer
215 views asked Oct 2, 2019 in The Tree House by Jonathan Wilson G2G6 Mach 1 (11.0k points)
+15 votes
8 answers
+4 votes
2 answers
304 views asked Mar 2, 2019 in Genealogy Help by John Trotter G2G6 Mach 3 (39.3k points)
+6 votes
3 answers
586 views asked Jan 11, 2019 in Genealogy Help by Jeff Andle G2G6 Mach 1 (10.2k points)
+4 votes
1 answer
240 views asked Apr 7, 2018 in The Tree House by Stephanie Stults G2G6 Mach 3 (37.7k points)
+5 votes
1 answer
+7 votes
3 answers
519 views asked Nov 3, 2017 in Genealogy Help by Joanne C G2G3 (3.4k points)

WikiTree  ~  About  ~  Help Help  ~  Search Person Search  ~  Surname:

disclaimer - terms - copyright

...