Saddle the Wind (1958)

Steve Sinclair (Robert Taylor) is a former gunfighter and soldier who left his violent ways behind him after the Civil War. Since then, he has settled down as a rancher in a small Western town. But his easygoing life is turned upside down when his unstable little brother, Tony (John Cassavetes), shows up with his bride-to-be, Joan (Julie London). While Steve has given up his gun-toting ways, Tony has not, and his violent tendencies lead to trouble for the entire town.