I have. Pretty much they're trying to fill the same gaps I am about my great grandmother. That's my dad's side of the family though, and on my grandmother's side. I know her dad and uncles all looked like Obama and Colin Powell, while my great grandmother looked like Mariah Carey. I can trace the history of the men. Service in the civil war. Underground railroad conductors. But great grandma is a dead end. All I know is that she was adopted and there are no records. In other words, her white mother got pregnant by a black man, probably biracial since her complexion was that light, and gave that kid up the moment she came out.