Question: Which English film and stage actor whose career spanned over four decades appeared in Saturday's Children?

Context paragraphs:
Eli Wallach: Eli Herschel Wallach ( ; December 7, 1915 – June 24, 2014) was an American film, television and stage actor whose career spanned more than six decades, beginning in the late 1940s.  Trained in stage acting, which he enjoyed doing most, he became "one of the greatest 'character actors' ever to appear on stage and screen" states TCM, with over 90 film credits.  On stage, he often co-starred with his wife, Anne Jackson, becoming one of the best-known acting couples in the American theater.  As a stage and screen character actor, Wallach had one of the longest careers in show business, spanning 62 years from his Broadway debut to his last major Hollywood studio movie.

John Warner (actor): John Hickson Warner (1 January 1924 – 19 May 2001) was a British film, television and stage actor whose career spanned more than five decades.  His most famous rôle was that of Timothy Dawes in "Salad Days", which premiered in the UK at the Theatre Royal in 1954, and transferred to the Vaudeville Theatre in London in the same year.

Saturday's Children: Saturday's Children is a 1940 American drama film directed by Vincent Sherman and starring John Garfield, Anne Shirley, and Claude Rains.  It is a third-time remake of the original Maxwell Anderson play with a previous version released in 1935 under the title "Maybe It's Love".

Andy Clyde: Andrew Allan Clyde (March 25, 1892 – May 18, 1967) was a Scottish-born American film and television actor whose career spanned more than four decades.  In 1921 he broke into silent films as a Mack Sennett comic, debuting in "On a Summer Day".  He was the fifth of six children of theatrical actor, producer and manager John Clyde.  Clyde's brother David and his sister Jean also became screen actors.

Frédéric Mariotti: Frédéric Mariotti (1 April 1883 – 22 February 1971) was a French stage and film actor whose career spanned more than four decades through the early silent film era into the early 1950s.

Claude Rains: William Claude Rains (10 November 188930 May 1967) was an English film and stage actor whose career spanned 46 years.  After his American film debut as Dr. Jack Griffin in "The Invisible Man" (1933) he appeared in classic films like "The Adventures of Robin Hood" (1938), "Mr. Smith Goes to Washington" (1939), "The Wolf Man" (1941), "Casablanca" and "Kings Row" (both 1942), "Notorious" (1946), and "Lawrence of Arabia" (1962).

Paul Lavers: Paul Lavers (born 1950) is a British former television presenter for Anglia television and for several shopping channels and is also a film, television and stage actor whose career has spanned four decades.

Telly Savalas: Aristotelis "Telly" Savalas (; January 21, 1922 – January 22, 1994) was an American singer and character actor whose career spanned four decades of television.  He was noted for his deep, gravelly voice and his bald head.  He also released the one-hit wonder song, "If? ," which he introduced in the UK in 1975.  He had also appeared as a guest on several talk and variety shows.

James Ottaway: James Ottaway (25 July 1908 – 16 June 1999) was a British film, television and stage actor whose career spanned seven decades.

Michael Sharvell-Martin: Michael Sharvell-Martin (2 February 1944 – 28 October 2010) was a popular British television and stage actor whose career spanned more than three decades.  He was a familiar character actor on British television screens, guest starring in most prime time dramas and comedies throughout the seventies and eighties.

Supporting paragraphs: Saturday's Children Claude Rains
Answer: Claude Rains