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Originally published on Pottermore
Published on Jan 7th 2016
In the 13th century, Arithmancer Bridget Wenlock came up with a fascinating new theorem which exposed the magical properties of the number seven. The number permeates the Harry Potter septet of books, cropping up in all sorts of interesting places: we’ve laid out some of our favourites below...

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Who lost the most house points at Hogwarts? Find out our handy history of Hogwarts house points.

Ornament
Originally published on Pottermore
Ornament
Harry Potter to Fantastic Beasts
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