Polly Shannon (born September 1, 1973) is a Canadian actress. She is best known for her portrayal of Margaret Trudeau in the 2002 miniseries Trudeau, a film about the late Prime Minister of Canada Pierre Trudeau. Polly Shannon was born September 1, 1973 in Kingston, Ontario, and raised in Aylmer, Quebec. Her father, Michael Shannon, is a doctor who served in various senior posts at Health Canada, including director general for the Laboratory Centre for Disease Control. Her mother, Mary Mackay-Smith, is a screenwriter for children's films and television. At the age of 13, after acting in theatre as a child, Shannon became a model, with assignments that took her to New York, London, and Tokyo. She attended Philemon Wright High School in Hull, Quebec.

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