When Mabel Dawes was born on 24 June 1877, in Brantford, Brant, Ontario, Canada, her father, John William Dawes, was 42 and her mother, Susannah Perkins, was 41. She married Daniel Ethan Allen on 28 July 1897, in Bozeman, Gallatin, Montana, United States. They were the parents of at least 1 son and 2 daughters. She lived in Bozeman, Gallatin, Montana, United States in 1900 and School District 4 Livingston, Park, Montana, United States in 1940. She died on 2 September 1957, in Livingston, Park, Montana, United States, at the age of 80, and was buried in Mountainview Cemetery, Park, Montana Territory, United States.