Claim: To Kill a Mockingbird (film) was the film debut of an actor and filmmaker.
Evidence: To Kill a Mockingbird marked the film debuts of Robert Duvall , William Windom , and Alice Ghostley.
Robert Selden Duvall -LRB- -LSB- duːˈvɔːl -RSB- born January 5 , 1931 -RRB- is an American actor and filmmaker.
William Windom -LRB- September 28 , 1923 -- August 16 , 2012 -RRB- was an American actor.