Question: Which brother of the "Golden Boy" founded a UK company?

Context paragraphs:
Golden Boy (electronic musician): Stefan Altenburger (Zürich, 1968) is a Swiss visual artist who is best known as musician Golden Boy for his collaborations with Miss Kittin such as the club hit "Rippin Kittin."  He is not to be confused with the American hip hop artist Golden Boy known as Fospassin.

Paulo Kafeero: Kafeero, Paul Job (1970–2007) (Prince Paul Job Kafeero, Paulo Kafeero, the Golden Boy of Africa), the most celebrated composer and singer in the Ugandan tradition of Kadongo Kamu.  At the time of his death, he was planning to celebrate 20 years of an illustrious music career.  His catalogue consists of 83 songs on 21 albums.  It was his 1994 hit Walumbe Zaaya, a fifteen-minute lament on death in which no word is repeated, which sent him into the Ugandan musical stratosphere.  That song earned him the enduring nickname the Golden Boy of Africa from the 1994 Cairo music festival attended by thousands of African contestants, where he won a gold medal from the Institute d'Etudes Theatreales.  In 2003, his hit song Dipo Naziggala, which pokes fun at the drinking habits of Ugandans, won a Pearl of Africa Music Award (PAM) for best Kadongo Kamu single.  In both 2003 and 2004, he won the PAM award for best Kadongo Kamu artist/group).

Golden Boy Promotions: Golden Boy Promotions, Inc. is a boxing promotional firm started by former boxer 10-time world champion in six weight divisions Oscar De La Hoya (whose nickname is "The Golden Boy").  De La Hoya owns a majority interest in the firm, with Bernard Hopkins being a minority owner.  Previously Winky Wright, Shane Mosley, Marco Antonio Barerra and Ricky Hatton held interest in the company.

Billy Walker (boxer): William (Billy) Walker (born Stepney, London, 3 March 1939) is a British retired heavyweight boxer and actor.  He turned professional in 1961 after 39 amateur bouts.  His nickname was "Golden Boy".  His professional record was 21 wins (16 by knockout), 8 losses and 2 draws.  During 1967, he fought for both the British and European titles, losing to Henry Cooper (Great Britain) and Karl Mildenberger (West Germany) respectively.  After he retired from the ring in 1969 he appeared in several British films and TV shows.  His autobiography "When the Gloves Came Off" was published in 2007.

Brent Walker: Brent Walker was a UK company involved in property, gambling, distilled beverages and pubs.  It was founded by George Walker, the brother of the boxer Billy Walker.

Bob Goldham: Robert John "Golden Boy" Goldham (May 12, 1922 – September 6, 1991) was a Canadian ice hockey defenceman and broadcaster.  He played two seasons for the Toronto Marlboros earning the name "Golden Boy".  He was later called the "Second Goalie" because his fearless skills blocking the puck.

O Rapto do Garoto de Ouro: O Rapto do Garoto de Ouro ("The Golden Boy's Abduction") is a novel written by Brazilian writer Marcos Rey, originally released in 1982.  The story takes place in the neighborhood of Bexiga (São Paulo) and chronicles the adventures of a trio consisting of Leo, Gino and Angela, who come to investigate the abduction of their friend Alfredo (the Golden Boy) who had recently become famous thanks to a reality show.  With the help of Jaime (another friend of Alfredo) and a green diary, they go to question on their own a few people who may be responsible for the Golden Boy's abduction.

Golden Boy (Art Blakey album): Golden Boy (full title Art Blakey & The Jazz Messengers Play Selections From the New Musical Golden Boy) is a 1964 album by Art Blakey and the Jazz Messengers, performing compositions by Lee Adams and Charles Strouse written for the Broadway musical "Golden Boy".  The LP was originally released on the Colpix label.

Nonito Donaire vs. Omar Narváez: Nonito Donaire vs. Omar Narváez was a Boxing Bantamweight Championship fight for the WBO and the WBC World titles.  Donaire made his first -- and only -- title defense against junior bantamweight titleholder Omar Narvaez.  Shortly after the most significant win of his career, a highlight reel knockout of Mexico's Fernando Montiel, Donaire left Top Rank and signed with rival Golden Boy Promotions.  The deal was put on hold when an arbitrator upheld Top Rank's contract and enjoined Golden Boy from promoting Donaire.  Eventually, Donaire worked out his differences with Top Rank, which signed him to a contract extension in mid-July.

Golden Boy (Sin with Sebastian album): Golden Boy is the debut album by Sin With Sebastian, a moniker used by the German musician/songwriter Sebastian Roth.  The Eurodance album contained the international hits "Shut Up (and Sleep with Me)", "He Belongs to Me" and the title track "Golden Boy"

Supporting paragraphs: Brent Walker Billy Walker (boxer)
Answer: George Walker