Actor. He is best remembered for his portrayal of the headstrong Captain Joyce in "The Sands of Iwo Jima" (1949). Born into a traditional working-class family, he immigrated to the United States in 1929 too pursuit a better life. While working as a leading man in stock companies, he was discovered by director Lewis D. Collins while attending a casting call for bit players. Impressed by his reddish good looks, slim physique, and articulate voice, he took notice of his potential and arranged for him to begin a career in the film industry beginning with him appearing under his supervision per a major role in "Guns for Hire" (1932). From there, he would go on to flourish as a notable character actor appearing in over 80 features; often typecast as husbands, fathers, boyfriends, blue-collared guys, doctors, curmudgeons, eccentrics, landlords, policemen, reporters, detectives, mechanics, radio announcers, salesmen, retail clerks, clergymen, chauffeurs, waiters, doormen, bellhops, aristocrats, vendors, sailors, soldiers, authority figures, jailbirds, cowboys, sheriffs, guards, and, in his later years, patriarchs. He appeared in such feature films as "Strickly Dynamite" (1934), "The Spirit of 1976" (1935), "Charlie Chan at the Circus" (1936), "Fugitives for a Night" (1938), "Street of Memories" (1940), "Invisible Ghost" (1941), "Mexican Spitfire at Sea" (1942), "Shadow of a Doubt" (1943), "Bells of San Angelo" (1947), "The Strawberry Roan" (1948), "Flamingo Road" (1949), "Rock Island Trail" (1950), and "Call Me Mister" (1951). On television, he became an even more familiar face appearing in various guest spots on such syndicated sitcoms as "The Lone Ranger," "Hollywood Opening Night," "Gruen Guild Theatre," "Racket Squad," and "Chevron Theatre". During his career, he was a member of the Screen Actors Guild, had been supportive of the Motion Picture and Television Fund, was a regular parishioner of the Catholic church, had been a member of the Hollywood Republican Committee, held dual citizenship between the United States and Ireland, was a male model for the Forbes Agency, had been a celebrity spokesman for Seagrim's Ginger Ale, was a theatrical instructor for the Pasadena Playhouse, and he was courted by such notable leading ladies as Hedy Lamarr and Gene Tierney. Upon his retirement in 1952, McGuire, who never married nor had any children, spent the remainder of his life dividing time between his homes in Ireland and California being involved in charitable and religious ventures, until his death from the complications of undisclosed causes.