William Patrick Stuart-Houston served in the U.S. Navy during World War II, a fact that isn't especially notable on the surface. But Stuart-Houston isn't William's original last name. He was once William Hitler. William was the nephew of Adolph Hitler, and the German dictator once described William as "loathsome." William, a British citizen, moved to the U.S. during the war and penned a letter to the president begging to join the military. The FBI reviewed the proposal and allowed William to serve. Later, he and his wife had four sons, all of whom reportedly decided not to have children in order to end the Hitler bloodline.