Margaret Dumont Biography
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Trivia

Last appearance of any kind was on the TV show "The Hollywood Palace" (1964) in 1965, reprising her role as Groucho Marx's straight woman. She died just days later.

Her screen persona was that of a stolid, wealthy society matron, which is exactly what she was: her husband, John Moller, was a millionaire industrialist, and she often commuted to filming locations from her mansions in Palm Springs, California, and Paris, France.

She was the god-daughter of author Joel Chandler Harris.

Groucho Marx called her "practically the fifth Marx Brother".

Some have argued that her image of the refined lady who did not understand the Marx Brothers' humor was an artificial one since she had a long career being a comedic foil in comedy stage productions years before her more famous work.
Source provided by imdb (Copyright) - The Internet Movie Database.