Marcus Belby

Marcus Belby was a Ravenclaw student at Hogwarts School of Witchcraft and Wizardry who was considered for membership in the Slug Club in 1996. His uncle Damocles created the Wolfsbane Potion. However, Marcus' father was not on good terms with the famous potioneer, and for this reason, Horace Slughorn ultimately passed Marcus over. Marcus was described as thin and nervous-looking. He tried to answer one of Professor Slughorn's questions too fast and began choking; Slughorn had to cast Anapneo to clear his throat.

Behind the scenes

 * On the 24th of May 2008, the actor playing Belby, Robert Knox, was stabbed to death by Karl Bishop, while defending his younger brother outside a bar.
 * On March 04, 2009. BBC reported that Karl Bishop is convicted on the Knox's murder. Video of Rob's parents speaking after the conviction can be seen via this link.

Appearances

 * Harry Potter and the Half-Blood Prince
 * Harry Potter and the Half-Blood Prince (film)