Los hermanos Del Hierro (1961)

MY SON, THE HERO (1961)
In northern Mexico, in the early twentieth century, Reynaldo and Martín Del Hierro are witnesses of the murder of their father by Pascual Velasco. Spurred to vengeance by their mother, they grow up to carry out a vendetta against the killer. But their revenge only begets more violence, a cycle the brothers are helpless to stop.

Ismael Rodríguez cast melodrama star Columba Domínguez as the suffering mother who encourages her sons (Antonio Aguilar and Julio Alemán) to avenge the murder of their father (Pedro Armendáriz) by legendary director Emilio Fernández.