Tracey Davis was a student who started attending Hogwarts School of Witchcraft and Wizardry in 1991, and was Sorted into Slytherin House. She shared a dormitory in the Slytherin Dungeon with Millicent Bulstrode, Pansy Parkinson, Daphne Greengrass and a girl with glasses.
The name "Tracey" is from an English surname which was taken from a Norman French place name meaning "domain belonging to Thracius". It was used by Charles Dickens for a masculine character in his novel The Pickwick Papers (1837). It was later popularized as a feminine name by the main character Tracy Lord in the movie The Philadelphia Story (1940).