Sam O'Brien

Sam O'Brien is credited as Cowboy Jimmy Phillips in The Cowboys, a Western film released in 1972. The role marks O'Brien's sole documented appearance in the film industry according to available records. The film, set in the American frontier, features a cast of actors portraying cowboys and other frontier figures, with O'Brien among them in the specified role.

The Cowboys is a well-known Western that follows a group of young boys who join a cattle drive led by a seasoned cowboy after their schoolteacher is killed. O'Brien's character is one of the cowboys in this ensemble, contributing to the film's depiction of frontier life and adventure. No additional credits or roles for O'Brien have been identified in the verified sources.