I’m not totally sure, but I think I may have stumbled upon a 1990 sequel…
La Sombra del Tunco (1990)
Al ir a ver a Sara Montaño, El tunco Maclovio es muerto por la gente de Laura Montaño, la madre de la joven. Sara da a luz un niño y muere. El niño es rescatado de morir por Juan Mariscal, que lo lleva junto con el joven Marcelo, el amigo del Tunco, a su cabaña de las montañas, donde su amante Yara lo cuida. Juan pierde la memoria en un ataque de la gente de Laura. Yara al morir confiesa su origen. Marcelo muere al asaltar una carretera con dinero de Laura. El joven comprende lo estéril de la lucha y pide a Laura que desista de quitar sus tierras a los ovejeros de la región. Es atacado por gente de ella pero vence a todos sin hacer daño a Laura. Juan recupera la memoria y se une al hijo del Tunco para buscar su destino.
Google-translated:
Going to see Sara Montano, El tunco Maclovio is killed by the people of Laura Montano, the girl’s mother . Sara gives birth to a child and dies. The child is rescued from death by Juan Mariscal, who takes him to the young Marcellus, the friend of Tunco to his cabin in the mountains, where his mistress Yara caregiver. John loses his memory in an attack on the people of Laura. Yara dying confesses her origin. Marcelo die when assaulting a road with Laura money . Young understands how sterile the fight and asks Laura to desist from taking his land to the shepherds in the region. He is attacked by people but she beat all without hurting Laura. Juan gets memory and joins son Tunco to find your destination .
Juan Mariscal is the same character name in both films played by Mario Almada, so I guess it must be a sequel?