Some thought as to the origin of the name ""oregon" is that it came from an English officer's request to his superiors to search for a northwest passage in the 1760's. The route he proposed was from the Great Lakes to the headwaters of the Mississippi and then across the mountains following the river going to the Pacific which he referred to by its Indian name of Orogun or something like that. The river he was referring to is called the Columbia. There's also thought that the name came from an earlier French map referring to a river pronounced something like "auregun" or something on that order. Sorry if I don't have these spellings quite like they're supposed to be.