Mr. Krabs' Western Ancestor is the owner of the Krusty Kantina. Unlike Mr. Krabs who has a lot of money, Mr. Krabs' Western Ancestor is broke because Dead Eye Plankton takes all of the money he earns. Mr. Krabs' Western Ancestor first appeared in episode Pest of the West and so far that was his only appearance. Although his first ancestor who had the Krabby Patty, King Krabs, was before him, this Western Ancestor didn't have the Krabby Patty, unless Dunces and Dragons does not take accurate place in the timeline of SpongeBob, or the Krabby Patty was never known to him. It is possible that he might have an salty/cheap attitude like Mr. Krabs.
He looks exactly like Mr. Krabs and wears a western style outfit.