Spawn of the Desert.

Guiding two covered wagons along a desert trail, Duke Steele meets and befriends Sam Le Saint, a mysterious hermit who is searching for a former partner who destroyed his home and ran away with his wife and infant daughter eighteen years earlier. Later, the two men ride into a mining camp controlled by Silver Sleed, who runs a gambling place. Duke is smitten by beautiful young Nola "Luck" Sleed, and learns that she is the gambler's daughter. Silver Sleed also happens to be the man that Sam Le Saint is searching for. Sam, who is dying, kills Sleed, and Duke learns that Luck is Sam's long-lost daughter.