What actors and actresses appeared in Relevo para un pistolero - 1964?

You are likely referring to the film "A Pistol for Ringo" (also known as "Relevo para un Pistolero"). This 1965 Italian Western stars:

* Montgomery Wood as Ringo

* Fernando Sancho as El Colorado

* José Manuel Martín as Pedro

* Gia Sandri as Maria

* Richard Harrison as Jebediah

* Loris Gizzi as Colonel

It's worth noting that "Relevo para un Pistolero" is the Spanish title for this film, while "A Pistol for Ringo" is the English title.