Question: What was the nationality of the man who formed with Alan Bennett in "Beyond the Fringe", alongside Jonathan Miller and Peter Cook? 

Context articles: On the Margin
Beyond the Fringe
The Abbey (film)
Satire boom
A Trip to the Moon (Chronicle)
Pete and Dud: Come Again
Alan Bennett
Jonathan Miller
Play Wisty For Me – The Life of Peter Cook
Dudley Moore

On the Margin was a British satirical comedy sketch show written and performed by Alan Bennett and a regular cast including John Sergeant, Virginia Stride, Madge Hindle and Yvonne Gilan.
 Guest performers included John Fortune and Jonathan Miller.
 The show also featured songs and poems by John Betjeman and Philip Larkin.
Beyond the Fringe was a British comedy stage revue written and performed by Peter Cook, Dudley Moore, Alan Bennett, and Jonathan Miller.
 It played in London's West End and then in America, both on tour and on New York's Broadway in the early 1960s.
 Hugely successful, it is widely regarded as seminal to the rise of satirical comedy in 1960s Britain.
The Abbey (1995) — or The Abbey with Alan Bennett — is a three-part BBC TV documentary written and hosted by playwright Alan Bennett and directed by Jonathan Stedall.
 It is a personal tribute to, and tour of, Westminster Abbey.
The satire boom is a general term to describe the emergence of a generation of English satirical writers, journalists and performers at the end of the 1950s.
 The satire boom is often regarded as having begun with the first performance of "Beyond the Fringe" on 22 August 1960 and ending around December 1963 with the cancellation of the TV show "That Was The Week That Was".
 The figures most closely identified with it are Peter Cook, John Bird, John Fortune, David Frost, Bernard Levin and Richard Ingrams.
 Many of the figures who found initial celebrity through the satire boom went on to establish subsequently more serious careers as writers including Alan Bennett (drama), Jonathan Miller (polymathic), and Paul Foot (investigative journalism).
A Trip to the Moon is a 1964 television science fiction comedy film, produced as an episode of the CBS series "Chronicle".
 The script was written by Jonathan Miller and Robert Goldman, based on Jules Verne's novel "From the Earth to the Moon".
 All characters are portrayed by Alan Bennett, Peter Cook, Miller, and Dudley Moore, who had first worked together in the revue "Beyond the Fringe".
Pete and Dud: Come Again is a stage play about British "Beyond the Fringe" comedians Peter Cook and Dudley Moore, which was written by Chris Bartlett and Nick Awde.
 The comedy-drama had a sellout run at the Assembly Rooms as part of the 2005 Edinburgh Festival Fringe, where it was shortlisted for a Fringe First Award by The Scotsman, before moving to London's West End at The Venue in March 2006; this version starred Kevin Bishop as Moore, Tom Goodman-Hill as Cook, Colin Hoult as Jonathan Miller and Fergus Craig as Alan Bennett.
 It was published in playtext form by Methuen.
Alan Bennett (born 9 May 1934) is a British playwright, screenwriter, actor and author.
 He was born in Leeds and attended Oxford University where he studied history and performed with the Oxford Revue.
 He stayed to teach and research medieval history at the university for several years.
 His collaboration as writer and performer with Dudley Moore, Jonathan Miller and Peter Cook in the satirical revue "Beyond the Fringe" at the 1960 Edinburgh Festival brought him instant fame.
 He gave up academia, and turned to writing full-time, his first stage play "Forty Years On" being produced in 1968.
Sir Jonathan Wolfe Miller, CBE (born 21 July 1934) is an English theatre and opera director, actor, author, television presenter, humourist, and medical doctor.
 While training in medicine, and specialising in neurology, in the late 1950s, he first came to prominence in the early 1960s with his role in the comedy revue "Beyond the Fringe" with fellow writers and performers Peter Cook, Dudley Moore and Alan Bennett.
Play Wisty For Me – The Life of Peter Cook is an original play by Matthew Perret and Jeremy Limb, using the characters portrayed by Peter Cook and Dudley Moore (Pete and Dud, Derek and Clive, E. L. Wisty, Sir Arthur Streeb-Greebling and Sven the Norwegian fisherman) to tell the story of Peter Cook's life and pay tribute to his comic genius.
 After Moore's death, it was slightly rewritten, to become more of a tribute to Moore too.
Dudley Stuart John Moore, CBE ( ; 19 April 193527 March 2002) was an English actor, comedian, musician and composer.