Hesper Gamp (possibly)
Magical theoretitian (possibly)
Gamp family (possibly)
Gamp is (possibly) the wizard or witch who formulated Gamp's Law of Elemental Transfiguration. Alternatively, it may have been named after him or her by someone else. Gamp must have been good at Transfiguration to invent such as theorem.
Behind the scenes
- Harry Potter and the Deathly Hallows (First mentioned)