The man behind Hogwarts

Introduction: "Harry Potter" puts William in front of three choices: scholar, black scholar, and only black scholar. He chose to become a "black scholar." One day, after school, William led his men to destroy a hostile force. When he returned home, he received a letter, a letter sent by an owl. And so, his path changes...Hermione: Do you know the Ravenclaw Eagle? George Weasley: Do you know William Sides? Hagrid: Do you know who the best student is? Harry: ..."This is from