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Ancestral Family Tree DNA Testing / Impossible task?
« on: Tuesday 28 January 20 23:43 GMT (UK) »
I'm helping someone with their DNA link to me as she has no idea who her father is but he's obviously reasonably closely related to me. She and I have 113cM of shared DNA. I know this isn't a huge amount but I've found with this sort of length I can usually place someone in my tree or at least have a clue about which part of the tree they belong to.
By crossmatching etc with trees she has various DNA links with, I've discovered we have a link via my 2 x greatgrandparents. She is younger than me so I will obviously have a much longer cM of shared DNA with her father but even then I think we would have a two generation gap.
We have located DNA information on descendants of various children of those 2 x greatgrandparents and, for each of us, people who would be placed in more or less our respective generations have much shorter cM matches with each of us.
Could anyone else agree with my thought that it's likely she and I are actually both descended from the next generation down, ie my great grandmother? If that's the case it would make it very easy for us to ascertain exactly who her father might have been.
I'm usually quite good at finding my way through this but it's a strange situation when she really is fighting in the dark as no one can tell her about her family history. She's thrilled with finally finding information on her "family" and has no intention of contacting anyone else with her findings.
Looking through other threads, I can see mention of DNApainter. Could anyone say whether this might be something worth experimenting in this type of case please?
By crossmatching etc with trees she has various DNA links with, I've discovered we have a link via my 2 x greatgrandparents. She is younger than me so I will obviously have a much longer cM of shared DNA with her father but even then I think we would have a two generation gap.
We have located DNA information on descendants of various children of those 2 x greatgrandparents and, for each of us, people who would be placed in more or less our respective generations have much shorter cM matches with each of us.
Could anyone else agree with my thought that it's likely she and I are actually both descended from the next generation down, ie my great grandmother? If that's the case it would make it very easy for us to ascertain exactly who her father might have been.
I'm usually quite good at finding my way through this but it's a strange situation when she really is fighting in the dark as no one can tell her about her family history. She's thrilled with finally finding information on her "family" and has no intention of contacting anyone else with her findings.
Looking through other threads, I can see mention of DNApainter. Could anyone say whether this might be something worth experimenting in this type of case please?