Amongst the descendants of one of my 2nd great grandmothers there is a strong family legend that her first child was conceived in the 1850s by a man other than the husband she married soon afterwards, and with whom she went on to have multiple other children.
I have recently had my autosomal DNA tested with AncestryDNA and can see that I fall into DNA Circles, for both my 2nd great grandmother and her husband (my 2nd great grandfather), with a number of descendants of three of those multiple other children, which is what I would expect.
The other 8 members of my 2nd great grandmother's DNA circle are:
- 5 x 3rd cousins averaging 30.38 centimorgans (range 8.9-54) across 3.2 DNA segments (range 2-4) shared with me
- 3 x 3rd cousins once removed - all 0 centimorgans across 0 DNA segments shared with me
So far no descendants of my 2nd great grandmother's first born have shown up in either of these DNA Circles, which I suspect may indicate that none of them have tested.
At this stage I am not planning to ask them if they might be interested in testing, but what I am interested to know is whether, if they decide themselves to test, whether their appearance in the DNA Circle of my 2nd great grandmother and absence from the DNA Circle of my 2nd great grandfather would add credence to the family legend of the first child's conception.
The suspected father of this first child was prominent, and a later step may be to investigate whether any descendants of the first born fall into the DNA Circle (if one emerges) for that man.
I have not seen the birth certificate of this first child but have no reason to suspect that it would shed any light because I believe it will name my 2nd great grandfather as being the father.
Can Ancestry DNA Circles be useful for distinguishing fathers of children to a 2nd great grandmother?