Did the Skipper and the professor of "Gilligan's Island" have a name?

Question

Everyone knows Mary Anne, Ginger, the Howells, and Gilligan were all called by their name on the long running show... but what about the skipper and the professor?

Answer 1

The skipper's name was Jonas Grumby and the professor's name was Roy Hinkley.

Answer 2

it was Jonas Grumby.  Now I know why they called him Skipper.  The professor's name was Roy Hinckley Jr.

Answer 3

And Mary Ann's last name was Summers.