William Post Jr. was born on February 19, 1901 in Montclair, New Jersey, USA. He was an actor, known for Sherlock Holmes et l'arme secrète (1942), Mr. and Mrs. North (1942) and The Black Camel (1931). He was married to Joan Castle and Doris Muriel (Broiles) Post. He died on September 26, 1989 in Oklahoma City, Oklahoma, USA.