The Gay Cavalier(1946)

The Cisco Kid (Gilbert Roland) sets out on a double mission of rescuing a girl from forsaking her true love by marrying a supposedly wealthy suitor to save the old family hacienda, and he is also after the outlaws that robbed a stage carrying gold for the Mission. His task is made easier once he learns that the "wealthy" suitor (Tristram Coffin) is also the man behind the gold robbers.