I saw a program on that topic a few days ago. I think it was Adolf Hitler's half brother's son.
The mother had taken the boy to England and raised him there. But the boy went back to Germany in the mid thirties hoping to ride the coat tails of his uncle's success. But the boy proved to be an embarrassment to dear Uncle Adolf.
Instead of having his nephew killed, Adolf sent him home to England. By 1941, the boy had immigrated to America. And I think it was mentioned that he was given a position in the Navy and used for propaganda purposes through the war.
They tracked down four late middle aged Hitler brothers still living in America. The program claimed that all had made a joint vow to die childless so that the family would die out.
