Hi, sorry a bit of a long post...
My parents were both illegitimate, and i’m attempting to find out who my grandfathers are. After a recent DNA test on ancestry I have grouped together various matches.
One group is huge, With a strong Newfoundland link, plus includes a couple of my strongest matches
Person A = 208cm
Person B = 193cm
Looking through their family trees, they appear to be 2nd cousins.
Their common Great grandparents had 11 children so my initial thoughts was that my grandfather may be one of the sons...which fits in with the suggested relationship based on my shared DNA (job done I thought) however I then came across another match who is descended from the siblings. She would also be a 2nd cousin to the above, problem is that the shared DNA is much smaller than I would expect.
Person C = 30cm
I’ve contacted A, and she advised that she shares the below DNA with B and C
Person B = 493cm
Person C = 357cm
If they are 2nd cousins (A and C have very comprehensive family trees so no reason to doubt) this seems very high.
Would appreciate some thoughts deciphering all this, main query is whether it would be likely that I only share 30cm with a 2nd cousin?
