Trivia

In real life, he was a friend of Robert Mitchum. They lived in the same neighborhood in Santa Barbara in their last years.

He was known as one of the genuine "nice guys" of Hollywood, always eager to meet with his fans, sign autographs and pose for photographs.

His marriage to Joanne Dru broke down as a result of his affair with Une femme diabolique (1955) co-star Joan Crawford.

He was the very first Vancouver-born actor to be nominated for an Academy Award.

Older half-brother of Tommy Noonan, who appeared with him in J'ai tué Jesse James (1949). Noonan also worked with Ireland's former brother-in-law, Peter Marshall.

He appeared in the two classic westerns about the famous shootout in Tombstone, Arizona: "Gunfight at the OK Corral" and "My Darling Clementine." He was a member of the Clanton gang in both films.

Father of John Ireland and Peter Ireland. Former stepfather of Dick Haymes Jr..

Ex-brother-in-law of actor Peter Marshall.

'Variety' (October 22, 1969), in a section on Italian films in progress, lists Dieci bianchi uccisi da un piccolo indiano (1974), in which Ireland starred.

Replaced Wendell Corey in Montagne rouge (1951), who dropped out due to illness..

He has appeared in five films that have been selected for the National Film Registry by the Library of Congress as being "culturally, historically or aesthetically" significant: Commando de la mort (1945), La poursuite infernale (1946), La Rivière rouge (1948), Les fous du roi (1949) and Spartacus (1960).