Potioneer Quintia McQuoid dies as a result of consuming a Cure for Ague Potion that had not been brewed correctly. The Wizarding Schools Potions Championship is established to honor her memory (BoP).
Quintia McQuoid dies from an improperly brewed potion
Certainty Stated in canon
Location in Canon BoP: Book of Potions (game)
Type of Event Wizarding world