William Joseph Shields, known professionally as Barry Fitzgerald, was an Irish stage, film and television actor. In a career spanning almost forty years, he appeared in such notable films as Bringing Up Baby (1938), The Long Voyage Home (1940), How Green Was My Valley (1941), The Sea Wolf (1941), Going My Way (1944), None but the Lonely Heart (1944) and The Quiet Man (1952). For Going My Way, he won the Academy Award for Best Supporting Actor and was simultaneously nominated for the Academy Award for Best Actor. He was the older brother of Irish actor Arthur Shields. In 2020, he was listed at number 11 on The Irish Times list of Ireland's greatest film actors.

The Sea Wolf is a 1941 American adventure drama film adaptation of Jack London's 1904 novel The Sea-Wolf with Edward G. Robinson, Ida Lupino, John Garfield, and Alexander Knox making his debut in an American film. The film was written by Robert Rossen and directed by Michael Curtiz.