Flesh and the Spur is a 1957 Western with a revenge plot. It stars John Agar (known for his John Wayne westerns and his horror/science fiction roles), Marla English (in her last film) and Mike Connors (best known as Mannix in the TV series). It's a good enough western and worth watching for Agar alone. Seeing Connors here is a bonus. The woman screams entirely too much, but then I have little tolerance for screaming women in Westerns.
Rotten Tomatoes has no reviews and calls it "One of the least-known of the American-International "B" westerns of the 1950s".