Fun fact, all of the presidents except for one are directly related through King John of England. And the related presidents include Obama; it's actually Martin Van Buren who isn't related, as all presidents have English ancestry except for Van Buren, who was purely Dutch.
I once had to explain to someone how this did not imply that the Presidency was some sort of great royalist conspiracy. Oy vey.
I mean, I discovered when I was in undergrad that one of my best friends was my 15th cousin or so. In all likelihood, that's actually an underestimate of our relatedness, as we both have "colonial American" ancestors.
