John F. Kennedy—known to his friends as “Jack”—is remembered for a lot of things.  There was his service on PT-109 during World War II, his popular presidency that was contemporarily referred to as “Camelot”, the Cuban Missile Crisis, a tragic and violent assassination, and a series of train robberies.  Okay, that last item comes off as a little… incongruous, I’ll admit.  Presidents don’t usually get up to criminal activity until after they’ve been in office, so where would Kennedy find the time to slip away from the Oval Office and go stick up trains? Well, there were actually two different John F. “Jack” Kennedys.  The better-known one was born in Brookline, Massachusetts, in 1917.  The train robber was born somewhere in Missouri, sometime in 1870.  (Sorry, but that’s as specific as his biographers are able to get.)  The first Jack Kennedy’s fame was eclipsed considerably by the second Jack Kennedy.  Despite identical names, the two are not kn...