WHAT WAS GILLIGANS ' LAST NAME?? IT WAS MENTIONED IN ONE EPISODE.

Gilligan didn't have a last name and it was never mentioned in an episode but it was said by Bob Denver in a talk show that Gilligan's full name was Willy Gilligan but the first name Willy was never said in any of the 98 episodes or the Pilot of Gilligan's Island so Gilligan didn't have a last name and Gilligan was his first name on the show (in some episodes when he says who he is to a person who comes on the island he just says that he is Gilligan)

haha