"Frontier Marshal" co-stars Nancy Kelly, Cesar Romero as "Doc Halliday" (the name was changed for the film from the original "Holliday" because of fear of a lawsuit from Holliday's family), John Carradine, and Lon Chaney, Jr.. Ward Bond appears as the town marshal; Bond was also in the 1934 version, and later appears as Morgan Earp in Ford's film. Eddie Foy, Jr., plays the large supporting role of his father, entertainer Eddie Foy, in this as well as three other feature films, and looks almost exactly like his famous father.