Dr Mary Cook was born in Barnsley, Yorkshire, England, on 4 August 1902.
She married an Anglican minister, Alexander Cook, and in 1926, they moved to South Africa and settled in the then Transvaal.
Dr Cook worked as a general practitioner until her first son was born in 1931.
These were primarily located at Koopmans-de Wet House, Strand Street, Cape Town.
She retired to her house, Ballotina in Church Street, Tulbagh, which she had bought in 1945, and died on 2 August 1981.