J-Hulk, the only "Jubei" I'm familiar with is the one in the "Ninja Scroll" anime, who is supposed to be based on some historical figure. Is that the same guy?
I stayed away from this one because I don't have any famous relatives. Just for the heck of it, I checked it out today and found out that I was missing out on. How many smacks are you up to, merlin?
Anyway, somebody said that relatives that were WWII vets were acceptable, so I'd have to mention both my father and my uncle. My uncle served somewhere in the European theater ( not sure where, he never talked about it to me ). My father served in the Pacific with an artillery unit and told me a few stories. His name was mentioned in some book on the history of WWII, but he showed me that about 25 years ago, so I have no idea which book it was.
As far as famous encounters, I met Bob Hope in St. Louis back in 1977 ( I was 6 at the time ) and Archie Griffin in 1993.
I also had an interesting conversation with a fellow at a party during a sci-fi convention several years ago. Looking at me he said, "Ah, Brother Rasputin! ( a common comparison, given my appearance )The original die-hard!" and we were talking for about an hour. Came to find out the next day that he was Harry Turtledove, author of a number of "alternate history" sci-fi books.