You are looking in a time period where not much information is yet released.
The only thing I could find is:
1953 voter's list
1163 Ossington Avenue Toronto
Dumall, Maurice, adjuster
Dunmall, Florence
Dunmall, Doris, clerk
Voter's List 1968
288 Lauder Ave, Apt 5, Davenport Toronto
Dunmall, Doris, housewife
Dunmall, Maurice, ins. mgr
1972
161 Oakwood Avenue apt 403 Trinity, City of Toronto
Dunmall, Maurice, insurance manager
Dunmall, Doris
Didn't find any marriage for Albert [marriages released to 1928]