|"Harry, your eyesight really is awful."
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Trev Mallory was a Gryffindor student at Hogwarts School of Witchcraft and Wizardry. He once signed up for Quidditch training at 7pm on Saturday on a sign-up sheet that was posted on the bulletin board in the Gryffindor common room.
- The Wizarding World of Harry Potter (Mentioned on a poster)