Professor Rowena Ravenclaw (fl. c. 993-1000) was a Scottish witch, who lived in the early Middle Ages. Noted for her intelligence and creativity and regarded as one of the greatest witches of the age, Ravenclaw was one of the four founders of Hogwarts School of Witchcraft and Wizardry along with Godric Gryffindor, Helga Hufflepuff and Salazar Slytherin, as well as the namesake of the Ravenclaw House.