Unlucky Robert Todd Lincoln was there as his father died in 1865, and witnessed three presidential assassinations.
He was also present on July 2, 1881, when James Garfield was felled by an assassin while waiting for a train in the Washington station of the Baltimore and Potomac Railroad.
And finally, he was also standing nearby the Pan-American exposition in Buffalo in 1901 when William McKinley was shot.
After that, Robert Lincoln decided to stay away from state affairs.
For more weird trivia about U.S. presidents check out your local library.