Gerald Edwards

 portrayed piano prodigy Matthew Williams in the fifth season episode, Samantha on the Keyboard (1968).

Career
Gerald Edwards is an actor. He voiced Weird Harold on "Fat Albert and the Cosby Kids" (1972-1985) and in three Fat Albert holiday specials.

He was a series regular on the television series, Cowboy in Africa (1967-1968), which also starred Bewitched alumni Tom Nardini. He also appeared in episodes of Bewitched and Family Affair.

Source
Gerald Edwards on the Internet Movie Database. Retrieved on May 16, 2022.