Answer: All of the founders of Hogwarts According to legend all four founders of Hogwarts enchanted the Sorting Hat, though it originally belonged to Godric Gryffindor.
Answer: 3 A pure-blood is descended solely from wizardkind; half-bloods have at least one magical parent but also a nonmagical parent or grandparent, and muggle-borns are born to two nonmagical parents.