Lincoln's idiot bodyguard got drunk in the same bar as John Wilkes Booth the night of the assassination
Marilyn sez, "With all this brouhaha about Secret Service agents misbehaving in Cartagena, I remembered this story in Smithsonian magazine two years ago about the unreliable presidential bodyguard who was supposed to be protecting Abraham Lincoln in Ford's Theater the night he got shot. The story is by Paul Martin (my former boss), who is researching unknown people who've changed the course of U.S. history. His first volume, on forgotten heroes, is just out, and he's working on the forgotten villains, which will no doubt include this one.