[Verginius Rufus]

There was a story of a man in the US Army in WWII who had the name Hitler. When he was told he ought to change his name, his reply was, "Let the other guy change his name!"

It's probably apocryphal.

[Lonesome in Massachussets]

Hitler’s patronymic grandfather was named Johann Georg Hiedler (whether or not he was Alois Hitler’s biological father). Hitler’s father, wrote his name as Alois Hitler. Since Hiedler is a fairly common German family name, his father did a lot of people a favor.