You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: FUNNY WESTERNS 
Clue: Gabby Hayes added comic relief to many of this singing cowboy's films including "My Pal Trigger"
roy rogers

Category: SPORTS & MUSIC 
Clue: In July 2010 this Rock & Roll Hall of Famer performed at the Baseball H.O.F. induction ceremonies
john fogerty

Category: NOT REALLY MARRIED 
Clue: This actress, TV's Hazel, cleans up with this actor & presidential assassin

shirley & john wilkes booth