Trevor Birch was a Ravenclaw student at Hogwarts School of Witchcraft and Wizardry in the 1990s. In 1996, he became a member of the Duelling Club, and hoped his mother would give him a broomstick for Christmas. He could usually be found at the Clock Tower Courtyard. Unlike most people who thought that Slughorn was a stakeholder, Trevor thought that he was a good teacher. One day he was duelling and beat him. The blow was so powerful that he needed two days recovering in the hospital wing. He was Gilderoy Lockhart's fan.