Professor Sybill Patricia Trelawney (b. before 1963) was a witch and professor of Divination, alongside Firenze, at Hogwarts School of Witchcraft and Wizardry. The great-great-granddaughter of the celebrated Cassandra Trelawney, she was also a seer.

It was Trelawney herself who made the prophecy concerning Voldemort and the one with the power to vanquish him (Voldemort took this to mean Harry Potter) during her job interview with Albus Dumbledore. At the end of the 1993–1994 school year, she accurately predicted the escape of Peter Pettigrew and return of Lord Voldemort Harry Potter and the Prisoner of Azkaban. Two school years later, Trelawney was greatly distressed by Dolores Umbridge, who dismissed her and attempted to banish her from Hogwarts Castle, though Dumbledore allowed her to remain at the school. She was greatly offended when she later had to teach alongside the centaur Firenze, and participated in the Battle of Hogwarts, dropping crystal balls on Death Eaters' heads and tending to the wounded with Padma Patil.

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