Rupert's Land named after Prince Rupert of the Rhine
Rupert's Land (French: Terre de Rupert), or Prince Rupert's Land (French: Terre du Prince Rupert), was a territory in British North America which comprised the Hudson Bay drainage basin; this was further extended from Rupert's Land to the Pacific coast in December 1821. It was established to be a commercial monopoly by the Hudson's Bay Company (HBC), based at York Factory. The territory operated for 200 years from 1670 to 1870. Its namesake was Prince Rupert of the Rhine, who was a nephew of King Charles I and the first governor of HBC. 
The areas formerly belonging to Rupert's Land lie mostly within what is today Canada, and included the whole of Manitoba, most of Saskatchewan, southern Alberta, southern Nunavut, and northern parts of Ontario and Quebec. Additionally, it also extended into areas that would eventually become part of Minnesota, North Dakota, and Montana. The southern border west of Lake of the Woods to the Rocky Mountains was the drainage divide between the Mississippi and Red/Saskatchewan watersheds until the Anglo-American Convention of 1818 substituted the 49th parallel.
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