Have a Good Funeral, My Friend… Sartana Will Pay (1970) on Netflix

Plot summary

Sartana happens upon the shooting of Joe Benson and his prospecting crew and kills the gunmen himself. He wants to know why they died. In Indian Creek, nearly every resident is eager to buy the land the dead man left behind, so the list of suspects is long. A saloon keeper, the banker and the owner of the gambling house all want the property. The sheriff is not above suspicion, and neither is Benson's niece, who now owns the land. Swindlers working for the banker try to take the property for themselves, and Sartana comes to the niece's aid, looking for whoever ordered the killing on his own.