| Warning!
At least some content in this article is derived from information featured in Harry Potter: Hogwarts Mystery. Spoilers will be present within the article. |
| "There are plenty of eye-witness accounts. Just because you're so narrow-minded you need to have everything shoved under your nose before you–"
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- "It is my belief that great power is sealed inside of Hogwarts, but what kind of power, I do not know. Riches? Magic? An instrument of hope or death? I cannot say. A group of students and teachers alike formed a circle of trust. I fashioned an artefact to seal the identity of my closest co-conspirator."
- —Excerpt from the folio of Fortinbras[src]
The folio of Fortinbras was an ancient book owned by a former Hogwarts Charms Master, Professor Fortinbras, in which she penned down her fears and suspicions about the fabled Cursed Vaults. This book was retrieved from Charms Classroom where she left it behind centuries later during the 1987–1988 school year by Jacob's sibling. Although the ink on most of the pages had faded away, they still subsequently used it in their own research into their vaults while searching for their lost brother.
