Hi,
In case you don't have a date of death for your William John Carson... obit is in the Globe and Mail on 22 Sept 1966, page 43.
William John Carson, husband of Helen Johnston, died at Northwestern General Hospital on Sept 20 1966. Address had been 4 Flemington Park, Toronto. Father of Graham of Richmond Hill. Interment Glendale Memorial Gardens.
Obit says "Flemington Park", but I am quite sure it should say "Flemingdon Park".
RK