Books like The Dunwich Horror

In H.P. Lovecraft's, "The Dunwich Horror", we are told the story of Wilbur Whateley, the son of a deformed albino mother and an unknown father (alluded to in passing by the mad Old Whateley as "Yog-Sothoth"), and the strange events surrounding his birth and precocious development. Wilbur matures at an abnormal rate, reaching manhood within a decade. All the while, his sorcerer grandfather indoctrinates him into certain dark rituals and the study of witchcraft.