John Truscott (23 February 1936 – 5 September 1993) was an Australian actor, production designer, costume designer and artistic director.
 He won two Academy Awards for his work on the 1967 film "Camelot".
Lancelot du Lac is a 1974 French fantasy drama film written and directed by Robert Bresson.
 It retells the story of Lancelot and Guinevere's love as Camelot and the Round Table fall apart.
 It is based on Arthurian legend and medieval romances, especially the Lancelot-Grail cycle, and the works of Chrétien de Troyes.
Camelot is a 1967 American musical comedy-drama film directed by Joshua Logan and starring Richard Harris as King Arthur, Vanessa Redgrave as Guenevere, and Franco Nero as Lancelot.
 The film is an adaptation of the homonymous musical by Alan Jay Lerner and Frederick Loewe.
 Lerner also wrote the screenplay.
Noboru Nakamura (中村 登 , Nakamura Noboru , 4 August 1913 – 20 May 1981) was a Japanese film director and screenwriter.
 His 1963 film "Twin Sisters of Kyoto" was nominated for the Academy Award for Best Foreign Language Film.
 His 1967 film "Portrait of Chieko" was also nominated for the Best Foreign Language Oscar.
 His 1967 film "Lost Spring" was entered into the 17th Berlin International Film Festival.
 It was announced that his three films, "Home Sweet Home" (1951), "When It Rains, It Pours" (1957), and "The Shape of Night" (1964), will screen at the Tokyo Filmex in 2013.
Robert Gerard Goulet (November 26, 1933 October 30, 2007) was an American singer and actor of French-Canadian ancestry.
 Goulet was born and raised in Lawrence, Massachusetts.
 Cast as Sir Lancelot and originating the role in the 1960 Broadway musical "Camelot" starring opposite established Broadway stars Richard Burton and Julie Andrews, he achieved instant recognition with his performance and interpretation of the song "If Ever I Would Leave You", which became his signature song.
 His debut in "Camelot" marked the beginning of a stage, screen, and recording career.
 A Grammy Award, Tony Award, and an Emmy Award winner, his career spanned almost six decades.
Lancelot Victor Edward Pinard (March 24, 1902 – March 12, 2001) was a calypso singer and actor who used the name Sir Lancelot.
 Sir Lancelot played a major role in popularizing calypso in North America, and Harry Belafonte has acknowledged him as an inspiration and major influence.
Guess Who is a 2005 American comedy film about race relations directed by Kevin Rodney Sullivan.
 It is a loose remake of the 1967 film "Guess Who's Coming to Dinner", in the form of a romantic comedy.
 While the 1967 film covered interracial romance of a black man with a white woman, the 2005 film covered the topic of a white man with a black woman.
 The film stars Bernie Mac, Ashton Kutcher, and Zoe Saldana.
Lancelot and Guinevere (known as Sword of Lancelot in the U.S.) is a British 1963 film starring Cornel Wilde, his real-life wife at the time, Jean Wallace, and Brian Aherne.
 This lesser-known version of the Camelot legend is a work shaped predominantly by Cornel Wilde, who co-produced, directed, co-wrote, and played Lancelot.
Richard St John Harris (1 October 1930 – 25 October 2002) was an Irish actor and singer.
 He appeared on stage and in many films, appearing as Frank Machin in "This Sporting Life", for which he was nominated for the Academy Award for Best Actor, King Arthur in the 1967 film "Camelot" and the subsequent 1981 revival of the show.
 He played an aristocrat and prisoner in "A Man Called Horse" (1970), a gunfighter in Clint Eastwood's Western film "Unforgiven" (1992), Emperor Marcus Aurelius in "Gladiator" (2000), and Albus Dumbledore in the first two "Harry Potter" films: "the Philosopher's Stone" (2001) and "the Chamber of Secrets" (2002).
 Harris had a number one hit in Australia and Canada and a top ten hit in the United Kingdom and United States with his 1968 recording of Jimmy Webb's song "MacArthur Park".
Francesco Clemente Giuseppe Sparanero (born 23 November 1941), better known by his stage name Franco Nero, is an Italian actor.
 He is best known for his breakthrough role as the title character in Sergio Corbucci's Spaghetti Western film "Django" (1966), a role that he reprised in Nello Rossati's "Django Strikes Again" (1987).

Question: What is the nationality of the actor who played Lancelot in the 1967 film Camelot?
Answer: Italian