John “Duke” Wayne’s younger brother, Robert Morrison, was a producer, assistant director and production associate during the 1940s-60s. He worked on three of his sibling’s Westerns, including McLintock!, The Alamo and The Fighting Kentuckian. But as far as I know, he didn’t appear in any of Wayne’s films.
Marshall Trimble is Arizona’s official historian. His latest book is Wyatt Earp: Showdown at Tombstone. If you have a question, write:
Ask the Marshall, P.O. Box 8008, Cave Creek, AZ 85327 or e-mail him at firstname.lastname@example.org