Following one of the materalineal lines, I saw that I was descended from a Scottish nobleman, and tracing back through some of the ancestors, I appear to be descended from Henry I and William the Conqueror and Malchom III. There were also various European noblemen and crusaders. That would make a descendant of kings going back to Alfred the Great. Then I looked up the US ancestor who was supposed to have descended from the nobleman who had these ancestors, and ancestry researchers said there was no evidence of it. I've got an early corporate owner in the genealogy was was an alderman of London, and that one seems pretty legit as long as my female ancestors were faithful and there weren't any other surprises. That's the most well-known ancestor I had, I think, other than Adam, Eve, Seth, Methuselah, Enoch, Noah, Noah's kids, and all those people we all have in common.I was reading online that it is likely most of Europe is descended from some king or another. If you multiply every generation by two going back, after a while you get more people than have ever lived as your number. So family trees eventually cross and one ancestor could be an ancestor multiple times on a family tree