Grave of the Vampire (Seed of Terror) - 1972

Many years following the death of a rapist/murderer in the 1930's by execution in the electric chair, Caleb Croft returns from the dead as a vampire and brutally assaults young Leslie Hollander and impregnates her with a baby boy, whom she nurses with bottles of blood. The child matures into the handsome James Eastman, who sets out on a mission to find and kill the evil man who sired him.