Nicholas Bond-Owen (born 13 November 1968) (sometimes billed as Nick or Nicholas Owen) is a child actor of the 1970s and 1980s best known for playing Tristram Fourmile in five series of the popular comedy "George and Mildred" and in the film of the same name.
Frank Calabrese Sr. (March 17, 1937 – December 25, 2012), also known as "Frankie Breeze", was a made man and a caporegime who ran major loansharking and illegal gambling operations for the Chicago Outfit.
 He is best known as a central figure in Operation Family Secrets and the subsequent Federal trial.
 Calabrese, who was battling a myriad of ailments, died on Christmas Day 2012 at the Federal Medical Center, Butner, in North Carolina.
Paul Nicholas (born Paul Oscar Beuselinck; 3 December 1944) is an English actor and singer.
 He started out with a pop career, but soon changed to musical theatre.
 Later, in the 1970s, he began an acting career.
 He returned to the pop charts, starring in the 1983 BBC sitcom "Just Good Friends", for which he is best known.
 The show won a BAFTA and Nicholas was also nominated for best comedy performance.
 After the show ended, he returned to musical theatre and various other entertainment roles, including producing and directing.
Nicholas Wiggins (born February 8, 1984), also known by the stage name Zombie Nicholas, is an American rock musician.
 He is best known for his time as the bassist and backing vocalist for the horror punk band Aiden from 2003 until 2015.
 He is also a member of the supergroup Me Vs. Myself with Carson Allen of On the Last Day and played bass for William Control's live band from 2008 to 2012.
 Most recently, he has been the rhythm guitarist of the hard rock band Girl On Fire, who released their debut album "Not Broken" in 2013.
 He lives in Seattle, Washington.
Nicholas I (Russian: Николай I Павлович , "Nikolay I Pavlovich" ; 6 July [O.S. 25 June] 1796 – 2 March [O.S. 18 February] 1855 ) was the Emperor of Russia from 1825 until 1855.
 He was also the King of Poland and Grand Duke of Finland.
 He is best known as a political conservative whose reign was marked by geographical expansion, repression of dissent, economic stagnation, poor administrative policies, a corrupt bureaucracy, and frequent wars that culminated in Russia's defeat in the Crimean War of 1853–56.
 His biographer Nicholas V. Riasanovsky says that Nicholas displayed determination, singleness of purpose, and an iron will, along with a powerful sense of duty and a dedication to very hard work.
 He saw himself as a soldier—a junior officer totally consumed by spit and polish.
 A handsome man, he was highly nervous and aggressive.
 Trained as an engineer, he was a stickler for minute detail.
 In his public persona, says Riasanovsky, "Nicholas I came to represent autocracy personified: infinitely majestic, determined and powerful, hard as stone, and relentless as fate."
 His reign had an ideology called "Official Nationality" that was proclaimed officially in 1833.
 It was a reactionary policy based on orthodoxy in religion, autocracy in government, and Russian nationalism.
 He was the younger brother of his predecessor, Alexander I.
 Nicholas inherited his brother's throne despite the failed Decembrist revolt against him and went on to become the most reactionary of all Russian leaders.
 His aggressive foreign policy involved many expensive wars, having a disastrous effect on the empire's finances.
James A. Nicholas (1921 – July 15, 2006) was an orthopedic surgeon and a pioneer in the treatment of athletic injuries who was best known for performing four knee operations that saved the career of Hall of Fame quarterback Joe Namath.
 Nicholas was among the best-known orthopedic surgeons in the United States as a physician for the New York Jets, the New York Knicks and the New York Rangers.
 In 1973 he established the Nicholas Institute of Sports Medicine and Athletic Trauma at Lenox Hill Hospital in Manhattan, New York.
 Nicholas was a long time member of Westchester Country Club.
 He died of colon cancer at age 85.
Nicholas Ray (born Raymond Nicholas Kienzle Jr., August 7, 1911 – June 16, 1979) was an American film director best known for the movie "Rebel Without a Cause."
Harry Norris (12 June 1888 – 15 December 1966) was an Australian architect, one of the more prolific and successful in Melbourne in the interwar period, best known for his 1930s Art Deco commercial work in the Melbourne CBD.
 His designs were informed by his regular overseas trips, especially to the United States, which he visited at least every 18 months from perhaps the late 1920s; and he was one of the very first architects to introduce Art Deco style buildings to central Melbourne.
 He had a strong relationship with the wealthy Nicholas family, designing not only the Nicholas Building, but the simpler yet similar Nicholas Factory in South Melbourne, and the spectacular mansion 'Burnham Beeches' in the Dandenongs for Alfred Nicholas.
 He also had a long relationship with G J Coles, designing branches of their eponymous Coles Stores from the late 1920s, numerous matching Art Deco branches in the 1930s, and some of their earliest supermarkets in the 1950s, as well as a country house for E.B.Coles in 1938.
 He refused membership of the RVIA for many years until finally joining on the 21 February 1946.
 Harry Norris retired on his 76th birthday in June 1966 and died 6 months later.
Nicholas W. Calabrese (born November 30, 1942) is the first made man ever to testify against the Chicago Outfit.
 His testimony and cooperation with federal prosecutors helped result in the 2007 murder convictions of mobsters Joseph Lombardo, James Marcello and his brother, Frank Calabrese Sr.
Nicholas Lea (born Nicholas Christopher Herbert; June 22, 1962) is a Canadian actor best known for his portrayal of Alex Krycek on "The X-Files" and of Tom Foss on "Kyle XY".

Question: What is the brother of Nicholas Calabrese best known as?
Answer: a central figure in Operation Family Secrets and the subsequent Federal trial