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William Duncan (16 December 1879 – 7 February 1961), born in Dundee, Scotland, was known as a major actor, producer, writer, and director of film serials and features in Hollywood. After immigrating to the United States as a child with his family, he became a leading star in the new film industry. Promoted as a Scottish star, he became one of the highest paid actors when under contract to Vitagraph.