James Arness, the tall, iconic actor best known for playing Marshal Matt Dillon on the long-running television series "Gunsmoke," died on June 3, 2011, at the age of 88. The Los Angeles Times reports the actor died of natural causes. He was the brother of actor Peter Graves.
John Wayne starred in the film 'Big Jake' with his son Ethan playing the role of his grandson. His other son, Patrick, played his son James in the movie. (His other sons in the movie were played by Robert Mitchums son & Bobbie Vinton - can you sing Blue Velvet?)