Sheila Ann Martin née Cowan (born July 31, 1943) is the wife of Paul Martin, who served as the 21st Prime Minister of Canada from December 12, 2003 to February 6, 2006. Her father was William "Bill" Cowan, a lawyer and philanthropist from Windsor, Ontario. She was named after her mother. Sheila was raised Protestant, and graduated from the University of Toronto in 1964.She and Paul were neighbours and her father was law partners with Paul Martin Sr in Windsor, Ontario.