Hyppolite was the star player on Haiti’s side at the 2014 tournament, responsible for eight of their nine goals during their opening match against the Brazilian national side, although they ultimately lost the match after their Beater committed a foul which meant the team was disqualified (Pm).
Other canon notes and references
Clairvius may derive from a Haitian man, Clairvius Narcisse, who was allegedly turned into a zombie - especially appropriate given Haiti's Inferi mascots (Wikipedia). The word clair comes from Latin clarus, meaning "clear, light, famous" (Baby Namespedia).
Lexicon list of Chasers
From the Web
Writing by J.K. Rowling on Pottermore:
- History of the Quidditch World Cup
- 2014 Quidditch World Cup reports
- 2014 Quidditch World Cup final
- The Daily Prophet
Pottermore enhanced reading experience: Quidditch World Cup
Screenshots of the original Daily Prophet coverage of the 2014 Quidditch World Cup on Pottermore: Imgur archive
Harry Potter Wiki: Clairvius Hyppolite