Hogwart's School for Witchcraft and Wizardry
Librarian Irma Pince
Madam Irma Pince (fl. 1991—1997) was a witch and the librarian at the Library of Hogwarts School of Witchcraft and Wizardry. As all Hogwarts staff were highly skilled and professional, Madam Pince was no exception as she was highly possessive and protective of the Hogwarts Library’s valuable books. She was a severe and strict woman, who was described as thin, irritable and looked like an underfed vulture. As such, she was deemed highly unpleasant by most of the student body. After the death of Albus Dumbledore, she attended his funeral and wore a long black veil as a mark of respect.
Irma Pince was born a witch and presumably purchased her wand prior to attending school. She likely attended Hogwarts School of Witchcraft and Wizardry and proceeded with her studies into the magic arts until at least her sixth year, since she could perform intricate non-verbal magic, was able to place powerful jinxes and hexes on objects and could effectively remove a curse from a student by administering the correct counter-curse.
At some point, Pince took up the position of Librarian at Hogwarts School of Witchcraft and Wizardry. She was greatly disliked by the students for being very strict and unhelpful in finding books for them. An example of her strictness was the fact that she would not allow food in the library, for fear that the books would be damaged, and also disallowed talking, laughing, whispering, sneezing, scurrying, or any other behaviour that might seem at all suspicious in any way. She was also known to place odd jinxes and hexes on library books for their protection; for instance, one copy of Theories of Transubstantial Transfiguration was jinxed to hit the reader around the head, should he ever doodle on it. Pince cleaned the dust on the shelves of the library manually, with a feather duster she brandished at students whenever they looked suspicious.
At some point, the Headmaster, Albus Dumbledore, visited the library with the goal of publishing Quidditch Through the Ages for Muggles to raise money. However, Madam Pince was extremely reluctant to let the book leave the confines of the library, as well as the wizarding world, and Dumbledore had to pry each of her fingers from the spine to take it. Once he had taken the book, she wrote a warning, threatening the readers that the consequences of mistreating the book would be as horrible as it was in her power to make them.
Madam Pince was still librarian by the time Harry Potter had arrived at the school.