The 1916 census for Oyen, Alberta accidentally has her listed twice, with different ages of 28 and 32 (putting her birth around either 1884 or 1888). This turns out to be quite wrong, as her tombstone says Mable J, and having her born in 1891.

One listing of her has her name as Mabel Jane; the 1916 census has her as Margaret.

The 1921 census has her two children (Zella and George F.) living with her parents James and Agnes Nicholson in Arnprior. Mable has passed away by then, 1 year after her husband passed away.