Not trying to be a smart-aleck, but have you tried any web searches? It would help to know where you may already have looked.
I ran a search just now on "american fronter limited edition" which returned a lot of hits, but not this figure. The first hit returned, though, was for an artist, David Wright, and his website. He does have a series called "American Frontier", and I thought this figure might be based on one of his paintings, but I didn't see one that matches. Though, not all of the items in the catalog loaded as images, and I didn't take the time to open each one to look. The page for his American Frontier paintings is
https://davidwrightart.com/product-category/american-frontier/
I do think that your figure is based on a painting, and I think your figure was produced by one of the "instant collectible" manufacturers like Franklin Mint or Danbury Mint, someone along those lines. It's not from the Franklin Mint, though, because their pieces are generally marked with an identifier like "FM" and the copyright year.
How tall is the figure, from the sole of his left or back foot, to the top of his head, without the wolf's head, roughly?
That's pretty much what I come up with, off the top of my head.
Prost!
Brad