Rob Knox - wikipedia Rob Knox For the American record producer, see Rob Knox ( producer ). Rob Knox Robert Arthur Knox ( 1989 - 08 - 21 ) 21 August 1989 Kent, England 24 May 2008 ( 2008 - 05 - 24 ) ( aged 18 ) Sidcup, London, England, UK Occupation Actor Years active 2000 -- 2008 Robert Arthur Knox ( 21 August 1989 -- 24 May 2008 ) was an English actor who portrayed the character of Marcus Belby in the film Harry Potter and the Half - Blood Prince, and had signed to appear in the planned film Harry Potter and the Deathly Hallows. Having studied at Beths Grammar School, Bexley, Knox began acting aged 11, gaining small roles in British television shows like The Bill, After You 've Gone and Trust Me, I 'm a Teenager. His first cinematic appearance was as an extra in King Arthur ( 2004 ). Knox died after being stabbed outside a bar in Sidcup, Southeast London, in May 2008, when he intervened in a fight to protect his brother. His murder attracted widespread attention in the British press, and his assailant, Karl Norman Bishop, was subsequently sentenced to life imprisonment, with a minimum 20 - year non-parole period. An annual film festival, the Rob Knox Film Festival, was created in Knox 's name to commemorate him, by the Rob Knox Foundation which helps fund training for young local people in the arts. Contents 1 Early life and career 2 Harry Potter 3 Death 3.1 Murder 3.2 Arrest and trial of Karl Bishop 4 Filmography 5 References 6 External links Early life and career Knox was born to Colin and Sally Knox in 1989. He was a pupil at Beths Grammar School, Bexley. He had been acting since the age of 11, and his first credited role was a small part in an episode of the ITV police drama The Bill and he also appeared in the Channel 4 reality show Trust Me, I 'm a Teenager, and the BBC comedy After You 've Gone. He had previously appeared as an extra in a number of productions. The first film Knox appeared in was King Arthur in 2004. He also appeared on Tonight with Trevor McDonald. Harry Potter In 2007, casting began for the role of Marcus Belby in Harry Potter and the Half - Blood Prince, the film adaptation of British author J.K. Rowling 's best - selling novel and the sixth installment of the Harry Potter film series. Knox posthumously starred in Harry Potter and the Half - Blood Prince ( 2009 ). Although his character does not appear in the seventh novel, Knox had signed on to reprise his role as Marcus in the final installment of the Harry Potter film series, Harry Potter and the Deathly Hallows. The film was divided into two parts for financial and scripting reasons ; Part 1 was released in November 2010, with the second part in July 2011. Death Murder Knox died at the age of 18 after he was stabbed outside the Metro Bar in Sidcup, South East London, on 24 May 2008. He had intervened in a fight to protect his 17 - year - old brother Jamie, who was being threatened by two men, one of whom was armed with two knives. Warner Bros. released a statement concerning his death : `` We are all shocked and saddened by this news and at this time our sympathies are with his family ''. Arrest and trial of Karl Bishop Karl Norman Bishop ( born 1987 in Lewisham, Southeast London ), from Carlton Road, Sidcup, was charged with the murder. He was taken into custody, and remained there until his trial, which began in February 2009. Bishop was found guilty of murder on 4 March 2009, and received a life sentence with a minimum of twenty years before being considered for parole. Police reported that he showed no remorse for the crime. Filmography Film Year Film Role Notes King Arthur extra Uncredited 2009 Harry Potter and the Half - Blood Prince Marcus Belby Released posthumously ( final film role ) Television Year Title Role Notes The Bill Unknown 1 episode Trust me I 'm a Teenager Himself 2007 After You 've Gone Josh ( 2 episodes ) References ^ Jump up to : `` More Potter film casting revealed ''. Newsround. 19 December 2007. Retrieved 19 December 2007. ^ Jump up to : Brown, David ( 26 May 2008 ). `` Family of murdered Robert Knox speak out ''. Kent : Times Online. Retrieved 27 May 2008. Jump up ^ http://news.sky.com/story/675396/actors-killer-smirks-as-hes-jailed-for-life Jump up ^ Sanderson, Daniel ; Aye Maung, Carole. `` Harry Potter star stabbed to death how does harry feel ''. News of the World. Archived from the original on 26 May 2008. Retrieved 27 May 2008. Jump up ^ Buchanan, Jason ( 2009 ). `` Overview of Harry Potter and the Half - Blood Prince ''. Allmovie. Retrieved 14 May 2010. Jump up ^ Jack Malvern ( 14 March 2008 ). `` Longer spell at box office for Harry Potter ''. The Times. Jump up ^ Olly Richards ( 14 March 2008 ). `` Potter Producer Talks Deathly Hallows ''. Empire. Retrieved 14 March 2008. Jump up ^ Boucher, Geoff ( 12 March 2008 ). `` Final ' Harry Potter ' book will be split into two movies ''. The Los Angeles Times. Retrieved 12 March 2008. ^ Jump up to : `` Potter film actor killed in fight ''. BBC News. 24 May 2008. Retrieved 24 May 2008. Jump up ^ Teenage Harry Potter Actor Rob Knox Dies After Being Stabbed In Bar Fight In Sidcup Jump up ^ Harry Potter actor killed in Sidcup knife attack -- Telegraph Jump up ^ Births England and Wales 1984 -- 2006 Jump up ^ `` Harry Potter Actor 's Murder : Man In Court '', News.Sky.com, 27 May 2008 Jump up ^ `` SIDCUP : Man to stand trial for murder of Harry Potter actor Rob Knox '', ThisIsLocalLondon.com 6 February 2009 Jump up ^ ' Potter actor 's parents ' anguish ' BBC News, 4 March 2009 Jump up ^ Bannerman, Lucy. `` Karl Bishop guilty of killing Harry Potter actor Robert Knox '' The Times, 5 March 2009 Jump up ^ ' Life term for Potter actor killer ' BBC News, 5 March 2009 Jump up ^ `` Actor accused showed ' no remorse ' ''. BBC News. 20 February 2009. External links Robert Knox on IMDb Robert Knox Foundation Retrieved from `` https://en.wikipedia.org/w/index.php?title=Rob_Knox&oldid=860741524 '' Categories : 1989 births 2008 crimes in the United Kingdom 2008 deaths 2008 in London Deaths by stabbing in the United Kingdom English male film actors English murder victims Murdered British actors People from Medway People from Sidcup People murdered in England People educated at Beths Grammar School Male actors from Kent 21st - century English male actors English male child actors Deaths by stabbing in England Murdered male actors Hidden categories : All articles with dead external links Articles with dead external links from November 2012 Use dmy dates from November 2013 Use British English from November 2013 Pages to import images to Wikidata Articles with hCards Talk Contents About Wikipedia تۆرکجه Català Dansk Deutsch فارسی Français 한국어 Italiano Magyar Nederlands Polski Português Русский Suomi Svenska Українська 中文 9 more Edit links This page was last edited on 22 September 2018, at 18 : 36 ( UTC ). 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Question: who died from the cast of harry potter
Answer: Robert Arthur Knox