Emerging from Celaya in Guanajuato, the son of a rural teacher and a firefighter who perished in a 1948 blaze, Eric del Castillo-Negrete Galván entered the performing arts after a brief stint in seminary studies and a scholarship-supported education that led him to the National Association of Actors’ Film Institute under Andrés Soler in 1954. He cut his teeth in experimental theater during the ear…