Barnabus Finkley was a wizard known for winning a prestigious duelling competition using an unconventional spell. His existence is not recorded in the original seven novels; he is known exclusively from a Famous Witches and Wizards Card created for supplementary materials.
Almost nothing is known about the life of Barnabus Finkley, including his birth and death dates, blood status, or his years at Hogwarts School of Witchcraft and Wizardry. His entire known historical significance stems from a single, notable achievement. At an unknown point in wizarding history, Finkley competed in and won the All-England Wizarding Duelling Competition. This victory granted him a degree of fame, sufficient to be featured on a Famous Witches and Wizards Card.
Finkley's physical appearance and personality traits are unknown.
While he must have owned a wand, no details regarding its wood, core, or length are known.
There is no information available regarding Barnabus Finkley's family, friends, or any other personal relationships.
Barnabus Finkley is not mentioned in the seven original Harry Potter novels by J.K. Rowling. His character originates from a Famous Witches and Wizards Card included in the Harry Potter and the Chamber of Secrets video game (video game). The card's text reads: “Barnabus Finkley is famous for winning the All-England Wizarding Duelling Competition with a Cheese-Blasting Charm.” The humorous and absurd nature of his achievement—winning a serious competition with a seemingly trivial or domestic spell—is in keeping with the whimsical aspects of the wizarding world.