Hogwarts Librarian

The Hogwarts librarian is a witch employed by Hogwarts School of Witchcraft and Wizardry to monitor the library and watch over and protect books.

Duties
The Hogwarts librarian had many duties, including:
 * Monitor the Library.
 * Watch and protect the books.
 * Hex the books to protect them.
 * Oversee the Study Hall.

Known Hogwarts librarians

 * Madam Irma Pince