A Segment-ology TIDBIT
In Search on a Surname, I proposed a little experiment for my Matches to see if they, too, had an Ancestor I thought they had.
Here is another way to use the same search-on-a-surname/location process. A Match and I found a Common Ancestor, but on looking at his Tree, I thought one of the links in his ancestry was incorrect. So I proposed that he search his Matches for the link’s spouse’s surname/location in one case and search for my version of his link’s spouse’s surname/location in the other case. He reported “many, many Matches” in one case and none in the other. Case closed.
This often works because the Matches to an MRCA couple, should usually also match on the spouse. And Matches with a specific line of descent from an MRCA couple, should also descend from the spouses along that line of descent. From all of their Matches at Ancestry, some of them should be from those spouses who are also their Ancestors. If they list an Ancestor who is not a bio-Ancestor, they should have few if any Matches on that Ancestor. Actually, the same goes for your own Ancestry…
This is a process that may, or may not, always work. There is no guarantee. It’s something to try that might add evidence one way or the other.
[22AZ] Search on a Surname – Using It Part II TIDBIT by Jim Bartlett 20210625