I said in a post earlier, that I like to help fill out the family tree's of various notables. Mostly by adding siblings to their various ancestors. A lot of them have only the direct line, several generations back.
I've always liked actor Lee Marvin. The big red one is a favorite of mine. So looking at his Wikipedia page it stated that he was a 1st cousin 4 times removed of General Robert E Lee.
But Lee Marvin's tree was a bit scarce and the connection was not readily visible.
Taking this as a challenge, to see if this particular legend was true, I started to poke around and soon enough I hit paydirt.
The wikipeida page was correct, though a little off, Actor Lee Marvin and Robert E Lee are 1st Cousins, 5 times removed.
Lee Marvin's GGG Grand father was Richard Bland Lee, born 1761. Richard was the younger brother of Henry "Light Horse" Harry Lee, Revolutionary war general and father to Robert E Lee.
I added sources to the various profiles I worked on and it looks pretty solid.
But it's fun to help prove that link and add a bit more.