Claim: Marlon Brando was in a film by a screenwriter.
Evidence: ; Mark Antony in Joseph L. Mankiewicz 's 1953 film adaptation of Shakespeare 's Julius Caesar ; and Air Force Major Lloyd Gruver in Sayonara -LRB- 1957 -RRB- , an adaption of James Michener 's 1954 novel.
Joseph Leo Mankiewicz -LRB- February 11 , 1909 -- February 5 , 1993 -RRB- was an American film director , screenwriter , and producer.