After reading the Marilyn Monroe threads, I became curious about whatever became of Joe Jr.? I always thought he was a Doppelganger for his father, and only remember him in his military uniform during MM's funeral. I have included the Wiki link on him, but found ir=t interesting that ;
1) he seemed to have been a ne'er do well with substance abuse issues
2) he was one of the last people known to have spoken to MM before she died
3) he died within a few months of his father.
http://en.wikipedia.org/wiki/Joe_DiMaggio,_Jr