Mercia Swinburne was born on 2 February 1900 in Marrickville, Sydney, New South Wales, Australia. She was an actress, known for The Compulsory Wife (1937), Alibi (1931) and Ölüm Dansı (1948). She was married to George Relph. She died on 6 December 1993 in Chelsea, London, England, UK.