Mary was born in Colorado and finished her education with the ninth grade.
She was married over 50 years at the time of her husband Lawrence's death. They had seven children, they included Mabel, Fredrick (1890-1940), Charles, Margareth Alice Murphy (1898-1989), and Teresa. Another possible child is Frances Evelyn Jamison (1888-1952).
In the 1930's Mary supported the family by working as a dressmaker.