- "We are in the presence of a risk-taker! Quintia McQuoid would be proud — as most of you know, this Championship has been held in this garden every 7 years since 1407 in honour of Quintia McQuoid, that most memorable of potioneers, whose love affair with potions sadly came to an end with her untimely death from drinking an imperfectly-brewed cure for ague."
- —The Wizarding Schools Potions Championship announcer[src]
She died at a young age, after consuming a cure for ague that had been improperly brewed. To honour her memory, the Wizarding Schools Potions Championship was first held, in an enchanted garden, in 1407, and has been held every 7 years since, gathering Potions students from schools like Hogwarts, Mahoutokoro, Uagadou, and Koldovstoretz.
- Wonderbook: Book of Potions (Mentioned only)