Question: Kenneth Clark and Elizabeth Bishop, are American?

Context articles: Elizabeth Bishop House
Independent Television Authority
Kenneth Clark
Bury the Axis
Kenneth and Mamie Clark
Saltwood Castle
Elizabeth Bishop
What is a Masterpiece?
Mamie Phipps Clark
Classicism

The Elizabeth Bishop House, also known as the Bulmer House, is an historic single-family house that today is used as an artists' retreat in Great Village, Nova Scotia.
 The house is associated with Pulitzer Prize winning author Elizabeth Bishop who in her youth lived in the house each summer with her maternal grandparents, William Brown Bulmer and Elizabeth (Hutchinson) Bulmer.
 Bishop based many of her stories (such as "In the Village") and poems (such as "Filling Station") on aspects of Great Village and Nova Scotia.
 Although the Bulmers bought the property in 1874, it is not known when it was built.
 On May 21, 1997, the Bulmer House was recognized as a Nova Scotia Provincially Recognized Heritage Site for its connection to Elizabeth Bishop and her writings as well as for its architectural significance; it is a good example of a typical 1 ⁄ -storey Classical Revival dwelling dating from between 1800 and 1850, a type common to rural Nova Scotia.
The Independent Television Authority (ITA) is a defunct agency created by the Television Act 1954 to supervise the creation of "Independent Television" (ITV), the first commercial television network in the United Kingdom.
 The ITA was responsible for determining the location, constructing, building, and operating the transmission stations used by the ITV network, as well as determining the franchise areas and awarding the franchises for each regional commercial broadcaster.
 The Authority began its operations on 4 August 1954, a mere four days after the Television Act received Royal Assent, under the Chairmanship of Sir Kenneth Clark.
 The Authority's first Director General, Sir Robert Fraser was appointed by Clark a month later on 14 September.
Kenneth Mackenzie Clark, Baron Clark, (13 July 1903 – 21 May 1983) was a British art historian, museum director, and broadcaster.
 After running two important art galleries in the 1930s and 1940s, he came to wider public notice on television, presenting a succession of series about the arts during the 1950s and 1960s, culminating in the series "Civilisation" in 1969.
Bury the Axis a 1943 stop-motion animated short directed and animated by American Lou Bunin, a famous and successful puppeteer who had worked in Hollywood previously, was released by Paramount Pictures on February 3, 1943.
 It was part of a British plan to showcase the enemies of Britain as truly evil in the eyes of the public in order to continue the war effort.
 Kenneth Clark, as head of the Films Division of the Ministry of information that was re-established at the start of the war, argued in 1940 that the public must be convinced of German brutality, stating 'we should emphasise wherever possible the wickedness and evil perpetrated in the occupied countries' Though very little research and historiography has been produced on "Bury the Axis", it is often remembered by historians and film and animation researchers as being 'memorable'
Kenneth Bancroft Clark (July 14, 1914 – May 1, 2005) and Mamie Phipps Clark (April 18, 1917 – August 11, 1983) were African-American psychologists who as a married team conducted important research among children and were active in the Civil Rights Movement.
 They founded the Northside Center for Child Development in Harlem and the organization Harlem Youth Opportunities Unlimited (HARYOU).
 Kenneth Clark also was an educator and professor at City College of New York, and first black president of the American Psychological Association.
Saltwood Castle is a castle in Saltwood village, one mile (2 km) north of Hythe, Kent, England.
 Of 11th century origin, the castle was expanded in the 13th and 14th centuries.
 After the Norman Conquest, the castle was appropriated by the Archbishop of Canterbury Lanfranc and remained the property of the archbishops, with some interruptions, until 1540, when Thomas Cranmer was compelled to cede it to Henry VIII.
 The castle is reputed to have been the meeting place of the four knights who carried out the assassination of Thomas Becket in 1170.
 By the 19th century, it was "largely ruinous" and restorations to make portions of the castle habitable were carried out in the 1880s and 1930s.
 In the late 19th century, the castle was bought by an ancestor of Bill Deedes, the journalist and politician, who grew up there.
 In the 20th century, it was sold to Sir Martin Conway who commissioned Philip Tilden to undertake a restoration.
 In 1953, the castle was bought by the art historian Kenneth Clark (1903–1983), and then became the home of his son, the politician and diarist, Alan Clark (1928–1999).
 It remains the private home of his widow, Jane Clark.
 The castle is a Grade I listed building.
Elizabeth Bishop (February 8, 1911 – October 6, 1979) was an American poet and short-story writer.
 She was Consultant in Poetry to the Library of Congress from 1949 to 1950, the Pulitzer Prize winner for Poetry in 1956, the National Book Award winner in 1970, and the recipient of the Neustadt International Prize for Literature in 1976.
What is a Masterpiece?
 is a 1979 non-fiction book by British historian Kenneth Clark.
 It is a transcribed version of the Walter Neurath memorial lectures given by Clark.
 The work, initially released on 1 January 1979, received a Thames & Hudson republication on 1 May 1992.
Mamie Phipps Clark was an American social psychologist that focused on the development of self-consciousness of pre-schooled black children, along with her husband Kenneth Clark.
 Clark was born and raised in Hot Springs, Arkansas in 1917.
 Clark received her post-secondary school, schooling at Howard University and earned a bachelor's and master's degrees there.
Classicism, in the arts, refers generally to a high regard for a classical period, classical antiquity in the Western tradition, as setting standards for taste which the classicists seek to emulate.
 The art of classicism typically seeks to be formal and restrained: of the "Discobolus" Sir Kenneth Clark observed, "if we object to his restraint and compression we are simply objecting to the classicism of classic art.
 A violent emphasis or a sudden acceleration of rhythmic movement would have destroyed those qualities of balance and completeness through which it retained until the present century its position of authority in the restricted repertoire of visual images."
 Classicism, as Clark noted, implies a canon of widely accepted ideal forms, whether in the Western canon that he was examining in "The Nude" (1956), or the literary Chinese classics or Chinese art, where the revival of classic styles is also a recurring feature.