Hi again,
Short death notice in the Star for James Dickson Clewes says he died in Toronto on Dec 5, 1936 and was 61. Husband of the late Helen. No other family mentioned. Buried in Mount Pleasant. Funeral home was Trull on the Danforth... so he likely

lived in the East End of the City when he died. This isn't for sure, of course. But if he still lived in the West (Wallace Ave), he might have used a funeral home in that part of the city??
So, you might want to expand your 1921 census search to East York, as well as Toronto City?? Just a thought.
RK