I see. Can you confirm that the Ralph Sheldon you're talking about is this one - Ralph Sheldon
If so, I can remove Ralph (1605-1651) and his wife as parents for Isaac (1630-1708). I can put a note on Ralph's profile, rather than Isaac's, since Isaac's already has a lot of notes on it.
Bjørn, I agree. But I could understand making such an old DNA designation if (for example) all of the following occurred:
Father A born in 1605 (for example), had two sons:
--Son B born in 1625
--Son C born in 1630
and then in the present day
--Male descendant of Son B born in 1970
--Male descendant of Son C born in 1975
If the 1970 and 1975 descendants shared the same specific Y sub-haplotype and if the Most Common Recent (male-line) Ancestor (on paper documents) was Father A, then I can see inferring that Father A had a particular Y haplotype, the same as the two modern descendants. You would need multiple people in the modern day with specific matches to infer that. One descendent alone is insufficient, because of the chance of an undocumented interruption between now and 1605 (adoption, name change, birth out of wedlock, etc.).
I don't know how many modern male Sheldon descendants match precisely enough (or don't match precisely enough) to draw a conclusion about DNA designation in 1605. Perhaps that research is what my 8th cousin, Stephen, was referring to. He hasn't replied to confirm which Ralph Sheldon he was talking about, but I think now I'm sure enough to remove the link to Ralph, as he requested. Perhaps if he has more information about Ralph, Stephen can re-add Ralph in the appropriate position on the Geni tree.
Thank you, Bjørn, for raising this question.