Can you guess my middle name from it's initial? :)

Alright, so I know this is a repost. But the same offer still stands from the first post. If you guess my middle name from it's initial correctly, you'll get a prize.

Clue/hint: It is the last name to an actress in the 80's I believe. She was a character in the original classic film.
My initial starts with G.

Good luck! ;)