I will have to say this was a really strange journey.
I originally Googled one set of parameters for a 1952 Ford Hearse and came up with the single photo on the Sweeny Funeral Home website. They had posted 25-30 photos of different hearses in their history section and I assumed that they owned all of them. I assumed the body builder was Canadian and Smith Bros. did similar vehicles at that time.
Having little luck, I started using different search parameters/different arrangement of words and descriptions and stumbled upon what I believe is the answer. I then went back to the Sweeny site and I think I discovered that all the various hearse photos they posted there were just "examples" of hearses over the decades.
In any case, I now believe this is a 1952 Ford Mainliner Hearse with coach work by Olding Coachcraft and that the origin of the car is Australia, not Canada. I hope this is the correct answer.