He was an English-Canadian fur trader, surveyor, and map-maker, known to some native peoples as "Koo-Koo-Sint" or "the Stargazer". Over his career he mapped over 3.9 million square kilometers of North America and for this has been described as the "greatest land geographer who ever lived."
Interestingly, Canada;s land claim to the Oregon territory was because of this man. He had mapped and explored it in it's entirety. Canada did not win this claim fully however (Washington, and Oregon States where born from it, as well as British Columbia in Canada). That said there are now parts of Canada that were explored by Americans and claimed by the USA but lost their claim to Canada (mainly in our far north)!!!!!!
This one looks a lot like a few of the others. If I did not have them marked I would have them mixed up