Quentin Trimble

Professor Quentin Trimble was a wizard who once occupied the post of Headmaster of Hogwarts School of Witchcraft and Wizardry. He authored the textbook The Dark Forces: A Guide to Self-Protection, a required reading for any student enrolled in Defence Against the Dark Arts class.

Lifetime
Quentin attended Hogwarts School of Witchcraft and Wizardry in his youth, and was later appointed to the position of Headmaster of the school. Sometime throughout his adulthood, Quentin (or, as he was known after his appointment as Headmaster, Professor Trimble) authored the book The Dark Forces: A Guide to Self-Protection, a required reading for any Defence Against the Dark Arts student.

Post-mortem
Sometime prior to 1991, Professor Trimble passed away, and a portrait was hung of him at the Headmaster's office in Hogwarts Castle so that he could offer advice and solace to future Headmasters of the school. Unfortunately, whoever painted his name misspelled it, a mistake that was never fixed.

Magical abilities and skills

 * Dark charms: Professor Trimble wrote a book which included such spells as the Curse of Bogies and Knockback Jinx, and therefore it is likely he had at least some knowledge of dark charms.
 * Creatures: He also included information on Dark creatures such as hags, werewolves and zombies in his book, and thus must have had at least some experience facing them.

Etymology

 * "Trimble" is most likely a derivation of "tremble", meaning "to shake" - fitting considering his career as an author of books against the dark forces.

Behind the scenes

 * Professor Trimble's name is misspelt "Quintin Trimble" on his portrait in the films.

Appearances

 * Harry Potter and the Philosopher's Stone
 * Harry Potter and the Prisoner of Azkaban (film)
 * Harry Potter: The Exhibition
 * Harry Potter Limited Edition