"Hello there, sir. 10:1 for Fleur. There you go. Thank you very much."
Fred Weasley to this student[src]

This boy was a student at Hogwarts School of Witchcraft and Wizardry in the 1990s and possibly sorted into Hufflepuff.

During the Triwizard Tournament Dragon Challenge he bets 10:1 for Fleur Delacour in Fred and George Weasley's Bets shop to that she wins her challenge.