I think the beaver connection is a stretch. Can't agree with it. Of course, I haven't found the treasure though, so my thoughts don't count anyway. But Home of Brown to me still means somebody's name of brown, like you mentioned own solution. Just too many other things not fitting though ...
Wouldn't rule out the Yellowstone area though, especially with the Gardiner Connection.
Wouldn't rule out the Yellowstone area though, especially with the Gardiner Connection.