Rowena Ravenclaw

A founder of Hogwarts School of Witchcraft and Wizardry, Rowena was known for her brilliant mind and love of learning. Her house encouraged these qualities in its students, and as a result, boasted some of the cleverest and highest achieving witches and wizards at the school. However, Rowena's history was mired in tragedy. Rowena's daughter Helena was murdered after stealing her mother's enchanted diadem and running away. Both Helena and her murderer, The Bloody Baron, haunted Hogwarts, representing Ravenclaw and Slytherin house respectively.