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: NOTED BLACK AMERICANS 
Clue: This big band leader won 3 Grammys for his work on the 1959 courtroom drama "Anatomy of a Murder"
duke ellington

Category: ONE-NAMED PERSONALITIES 
Clue: Known as "The Face of '66", this British supermodel has her own clothing line
twiggy

Category: I REFUSE 
Clue: In Shakespeare this man refuses the crown, but according to Casca "He would fain have had it"

julius caesar