Wilhelmina W. Witchiepoo - I did not know the full name. Kinda like Willy Gilligan.
WWW - predating the World Wide Web even :D
https://villains.fandom.com/wiki/Wilhelmina_W._Witchiepoo
Wilhelmina Witchiepoo was said during the show.
Willy Gilligan was not. I think it was Bob Denver’s conjecture during interviews.
“Gilligan Gilligan” makes a whole lot more sense.
I can see the skipper calling him Gilligan, but would he introduce himself that way, to an island visitor? Gilligan had to be his first name also.