Book 6 | Ch:10 - The House of Gaunt

SPOILERS:

Harry attends his first lesson with Dumbledore, who explains that they will be delving into Voldemort’s past and takes Harry into the pensieve. In Bob Ogden’s memory they go to Marvolo Gaunt’s house to see about his son, Morfin, who has committed a crime; there they see a mean, impoverished, racist Marvolo abusing his daughter Merope. Dumbledore explains that Merope later used a love potion on a muggle boy named Tom Riddle, and they became Voldemort’s parents.