I cinque della vendetta (1966)

Jim Latimore's ranch is a thorn in the side of the ruthless Gonzales brothers and his marriage to their cousin Rosaria rankles even more. Bandit chief El Matanza is hired to rid them of Latimore and his baby son is taken to be raised as a Gonzales. Three years later five of Latimore's friends arrive to reclaim the boy, replace Rosaria in her home and avenge their murdered compadre.