Question: Are John Gunther and John Dufresne American?

Context paragraphs:
Mátyás Rákosi: Mátyás Rákosi ] (9 March 1892 – 5 February 1971) was a Hungarian communist politician.  He was born Mátyás Rosenfeld in Ada, present-day Serbia.  He was the leader of Hungary's Communist Party from 1945 to 1956 — first as General Secretary of the Hungarian Communist Party (1945–1948) and later holding the same post with the Hungarian Working People's Party (1948–1956).  As such, from 1949 to 1956, he was the "de facto" ruler of Communist Hungary.  An ardent Stalinist, his government was very loyal to the Soviet Union.  American journalist John Gunther described Rákosi as "the most malevolent character I ever met in political life."

John Gunther Dean: John Gunther Dean (born February 24, 1926) is an American career diplomat.  From 1974-1988, he served as the United States ambassador to five nations under four American presidents.

Citadel (U.S. Senate): Citadel (sub-title: The Story of the U.S. Senate) is a study of the United States Senate by the journalist William S. White.  Written in 1956, the book anticipates the great changes afoot in post-war Washington.  John Gunther in "Inside U.S.A." had put the problem of Southern intractability over civil rights reform in perspective, but White was the first to make public how skilled the Southern Senators were at utilising every procedural mechanism the chamber had to offer.

Death Be Not Proud (book): Death Be Not Proud is a 1949 memoir by American author John Gunther, taking its name from by John Donne.  The story was portrayed in a 1975 TV movie starring Robby Benson as Johnny Gunther and Arthur Hill as John Gunther.

John Dufresne: John Dufresne (born January 30, 1948) is an American author of French Canadian descent born in Worcester, Massachusetts.  He graduated from Worcester State College in 1970 and the University of Arkansas in 1984.   He is a professor in the Master of Fine Arts Creative Writing program of the English Department at Florida International University.   In 2012, he won a John Simon Guggenheim Memorial Foundation Fellowship for his work.

John Gunther: John Gunther (August 30, 1901 – May 29, 1970) was an American journalist and author whose success came primarily through a series of popular sociopolitical works known as the "Inside" books (1936–1972), including the best-selling "Inside U.S.A." in 1947.  He is best known today for the memoir "Death Be Not Proud" about the death of his beloved teenage son, Johnny Gunther, from a brain tumor.

Jan Masaryk: Jan Garrigue Masaryk (14 September 1886 – 10 March 1948) was a Czech diplomat and politician and Foreign Minister of Czechoslovakia from 1940 to 1948.  American journalist John Gunther described Masaryk as "a brave, honest, turbulent, and impulsive man".

Earl Snell: Earl Willcox Snell (July 11, 1895 – October 28, 1947) was an American politician, businessman, and member of the Republican Party, serving in the Oregon House of Representatives, as the Oregon Secretary of State, and as the 23rd Governor of Oregon.  American journalist John Gunther described Snell as "genial, mediocre, and perpetually on the fence."

Arkansas literature: Arkansas literature has an emerging consciousness, though it still lags behind other Southern states such as Mississippi and Georgia in the promotion of its literary culture.  University of Arkansas Press is probably the state's largest publisher of books, though there do exist some notable small presses in the state: August House, Rose Publishing Group, and Chenault and Gray.  The University of Arkansas's M.F.A. program has graduated a number of notable writers, including Lewis Nordan, John Dufresne, Steve Yarbrough, and more.  In 2004, the state held the first annual Arkansas Literary Festival in Little Rock, attracting famous writers from around the nation.  The Porter Prize is the state's most prestigious literary award.

Henry Gunther: Henry Nicholas John Gunther (June 6, 1895 – November 11, 1918) was an American soldier and the last soldier of any of the belligerents to be killed during World War I.  He was killed at 10:59 a.m., one minute before the Armistice was to take effect at 11 a.m.

Supporting paragraphs: John Gunther John Dufresne
Answer: yes