Have you checked the new Canadian Voters' Lists on Ancestry.ca which was just released yesterday?In 1935, there is a Benjamin Speakman in Hamilton and later on in the 1950s and 60s, there is a Benjamin Speakman in Scarborough, Ontario. Is this one yours?
The 1953 entry has a Benjamin & Mary Jane Speakman living at 35 Gamble Avenue. Robert is living at 31 Gamble Avenue. The 1957 census has Benjamin & Jean Speakman living at 192 Laird Avenue, Toronto.