Stephen Cornfoot began attending Hogwarts School of Witchcraft and Wizardry in 1991 and was sorted into Ravenclaw House. In his fourth year, Stephen invited Imogen Stretton to be his escort at the Yule Ball, because he and Sophie Roper were taking a break. To him, Imogen was just a friend, but this wasn`t as Sophie saw it. She was really hurt and upset. He fought during the Battle of Hogwarts against the Death Eaters in The Quad battlements. After the battle restarted, he was still fighting in the Great Hall and survived. After graduating, Stephen becomes an Auror and rekindled his relationship with Sophie Roper.