Yep, various parts of the Canadian shield, which is the ancient core of North America, are referred to as provinces. Grenville, Superior, Huron are a few.

I was just checking out the Grenville Province and was surprised to see that it goes down into Mexico. Why was I not informed?

Ah, how great it was, when I was living in Wisconsin, to go north into the Canadian Shield and see the hard, mysterious, colorful rocks of northern Wisconsin, the Upper Peninsula of Michigan, and Canada.