Bendix was born in Manhattan, the only child of Oscar and Hilda (Carnell) Bendix, and was named William after his German paternal grandfather. His uncle was composer, conductor, and violinist Max Bendix. In the early 1920s, Bendix was a batboy for the New York Yankees and said he saw Babe Ruth hit more than 100 home runs at Yankee Stadium. However, he was fired after fulfilling Ruth's request for a large order of hot dogs and soda before a game, which resulted in Ruth being unable to play that day. He worked as a grocer until the Great Depression."William Bendix, Actor, 58, Is Dead; Stage and Screen Veteran Capped Career With Riley", New York Times, December 15, 1964
