Helena Ravenclaw was a key character in the later Harry Potter stories, but fans of the movies may have seen a different actress play her early on.

The first 'Harry Potter' book was published 25 years ago in the U.K. ... They are Gryffindor, Hufflepuff, Ravenclaw and Slytherin. Now, while you're here, your house will be like your family.

All Seven ‘Harry Potter’ Books to Be Recorded as Full-Cast Audio Productions With More Than 100 Actors, Will Release Exclusively on Audible By Todd Spangler. Plus Icon.