I found your old thread on the genetic tests quite interesting. Male members of my mother's family have been participating in DNA testing to determine whether there is any relationship between two branches of a family here that bear the same name -- one family originally from Sweden and one family originally from Switzerland. Apparently there is no relationship -- both families happened to Anglicize their original name to the same name, which sounds English, if you don't know the story behind it.
But the DNA testing was very clear about the relationships, and it was amazing all the different nationalities that were included in the various subjects, even though the original Swedish genes (my family) were quite clear.