Man from Del Rio(1956)

Mexican gunfighter Dave Robles outdraws the town's outlaw-turned-sheriff and is invited to fill the dead man's shoes. But a tin star doesn't bring automatic respectability and Robles is shunned by the town's leading citizens. His popularity with its less-savory element, particularly saloonkeeper Bannister, wanes dramatically, too, as he starts to take his job seriously. It is his love for a decent, caring woman that keeps Dave in town, but can she convince him to lay down his gun and start a new life?