"I joined the "Baltic Sea Project" on the Family Tree DNA (FTDNA) web site. Right now some of the people are a little excited because a new member seems to be descended from "Gedymin," by which I assume they mean the Grand Duke. I think I know why they believe that, but I'm going to wait to try to figure out more when I have my own results and can do my studying on my results rather than someone else's."
I forgot to add, for those tied up in researching Scottish heritage as my husband is, he always runs into people who are certain they have a direct line to Mary, Queen of Scots. I guess in that way, in genealogy, there's always a rare few... Not to make light of it tho, it can happen.