How many head coaches named after a castaway from Gilligan's Island
appeared in the Super Bowl?
It helps to know their full names - Jonas Grumby (the Skipper), Willy Gilligan, Professor Roy Hinkley, Thurston Howell III, Eunice "Lovey" Howell, Ginger Grant, Mary Ann Summers.
Counting first and last names, the current tally is six. Here's the list (coach, year of first appearance, Super Bowl record):
Update: Naturally I'm talking about head coaches - I edited the opening sentence to clarify that distinction.