It would not surprise me about the Dodge brothers. They invested pretty heavily in Ford Detroit and manufactured a lot of parts for them. I've seen several model Ts with steering columns that have the Dodge brothers trade mark.
The Ford of Canada organization was not as much a part of the Ford Detroit across the river as it was a sort of franchise organization that gave Henry enough shares that they could share in his manufacturing rights. This started in 1904 with the Model C so it predated the model T era by 5-years. I'm sure they started a foundry early on so they could manufacture their own line of cars patterned after the Ford Detroit counterparts. This was back when it was Walkerville, Ontario which became a part of Windsor as things grew. The South African Ford division was part of Ford Canada as a Commonwealth assembly plant.