Grand Canyon Massacre

Grand Canyon Massacre is a 1964 Italian spaghetti western motion picture starring James Mitchum, Milla Sannoner, and George Ardisson. It is also known as Massacre At Grand Canyon.

After finding and killing the Slade brothers, who have murdered his father, Wes Evans returns home to Arriba Mesa. The judge offers him to be sheriff and Cooley, the holder of the office and a friend of Wes, is anxious to step down. Wes however only wants to settle down, but when he learns that his love Nancy who believed Wes to be dead has married Tully Dancer, he decides to leave again.However he is drawn into the ongoing ranch war between the Dancer family and Harley Whitmore. When learning that the Dancers have called in an outlaw gang led by the notorious Flake Manson and his brothers, Whitmore acts quickly and rides with a large body of men against the Dancer ranch. They are ambushed by Tully Dancers men at a pass and the groups entrench against each other. Wes, who worries for Nancy, negotiates a truce Whitmore will refrain from pushing through and the Dancers will send off the Manson gang. Tully and his father decide to secretly offer Flake Manson more money to get him to act, even if this endangers the life of Tullys brother Clay, who is sent to Whitmore as a hostage for the truce. ........

Source: Wikipedia