Gun for a Coward is a 1957 Western film starring Fred MacMurray.
Hannah wants to move to the big, sophisticated city of St. Louis and take her middle son with her. Bless refuses at the last minute, then feels guilty when the months go by and his unhappy mother becomes ill and passes away.Will, meanwhile, builds the ranch into one of the territorys largest. His primary concerns are rustlers and neighbor Audrey, whom he loves and intends to marry, although he has been slow to commit. What he doesnt know is that Audrey has fallen in love with Bless. ........
Source: Wikipedia