My great grandma was second cousins with the Confederate Civil War General, Thomas J. Jackson.
aka Stonewall
This one I believe, because it was somewhat recent, and we have the family tree thing to prove it.
Haha, and SUPPOSEDLY (claims my eccentric grandmother.. I don't really believe it) we were related to the first Princess of Wales, and therefore the late Princess Diana.
I GUESS that means that our new friend Mr. Paul Burrell can come to work for me now?