Mary McDougald was born in Chinguacousy Township, Peel County, Ontario on 12 May 1851, the daughter of John MacDougald and his wife Mary. She grew up with her 14 brothers and sisters in Portage La Prairie, Manitoba.
Married to Mark Fortune and resident in Winnipeg, Manitoba, she boarded the Titanic at Southampton as a first class passenger. She travelled with her husband, their three daughters Alice Elizabeth, Ethel Flora and Mabel, and their son, Charles Alexander Fortune. The family occupied cabins C-23-25-27.
Mary and her daughters were rescued, probably in lifeboat 10.
Mary, did not remarry and died in Toronto on 8 March 1929, aged 76.