Hello,
First look: I found Stewart Quinn, soldier WI,
living 165 Delisle Street, Montreal, single, born 04-09-1900 in Hamilton, Lancashire, Scotland.
Next-of-kin: Mars Kathelyn Quinn, mother living at 165 Delisle street, in Montreal.
I found Stewart again but under Stuart Alexander son of John Stewart & Catherine O'Donnell (both parents deceased)
So Catherine past away before 1923.
Stuart married 3 times: 1. to Rose Hinks in Montreal 1923.
2. married to Irene Levert in Montreal 1933
3. married to Greta Wilberta Schonaver or Schonauer in 1964 in Montreal.
I found Catherine child of John Quinn & Catherine O'Donnell
at her death 87 years old, living in Montreal, died April 2, 1991. stating to be born Feb 1 1904. Married at ?? date, spouse of a Mr Ashton.