Máirtín Ó Cadhain (] ; 1906 – 18 October 1970) was one of the most prominent Irish language writers of the twentieth century.
 Perhaps best known for his 1949 work "Cré na Cille", Ó Cadhain played a key role in bringing literary modernism to contemporary Irish language literature.
 Politically, he was an Irish nationalist and socialist, promoting the "Athghabháil na hÉireann" ("Re-Conquest of Ireland"), through Gaelic culture.
 He was a member of the Irish Republican Army with Brendan Behan during the Emergency.
Niall Tóibín (born 21 November 1929) is an Irish comedian and actor.
 Born in Cork into an Irish speaking family, Tóibín grew up on the north-side of the city in Bishop's Field.
 He has appeared in "Ryan's Daughter", "Bracken", "The Ballroom of Romance", "The Irish R.M.", "Caught in a Free State", "Ballykissangel", "Far and Away", and "Veronica Guerin", and has played Brendan Behan too.
 He was awarded honorary lifetime membership of the Irish Film and Television Academy (IFTA) in 2011.
Brendan Francis Aidan Behan (christened Francis Behan) ( ; Irish: "Breandán Ó Beacháin" ; 9 February 1923 – 20 March 1964) was an Irish Republican, poet, short story writer, novelist, and playwright who wrote in both English and Irish.
 He is widely regarded as one of the greatest Irish writers and poets of all time.
Comhar (meaning "partnership") is a prominent literary journal in the Irish language, published by the company Comhar Teoranta.
 It was founded in 1942, and has published work by some of the most notable writers in Irish, including Máirtín Ó Cadhain, Seán Ó Ríordáin, Máirtín Ó Direáin, Máire Mhac an tSaoi and Brendan Behan.
 Comhar also publishes books in Irish (around three a year).
Theodore Harold White (, May 6, 1915 – May 15, 1986) was an American political journalist and historian, known for his wartime reporting from China and accounts of the 1960, 1964, 1968, 1972, 1976 and 1980 presidential elections.
Borstal Boy is a play adapted by Frank McMahon from the 1958 autobiographical novel of Irish nationalist Brendan Behan of the same title.
 The play debuted in 1967 at the Abbey Theatre in Dublin, with Frank Grimes as the young Behan.
 McMahon won a New York Drama Critics' Circle Award in 1970 and Tony Award in 1970 for his adaptation.
Reginald Gray (1930 – 29 March 2013) was an Irish portrait artist.
 He studied at The National College of Art (1953) and then moved to London, becoming part of the School of London led by Francis Bacon, Lucian Freud and Frank Auerbach.
 In 1960, he painted a portrait of Bacon which now hangs in the permanent collection of the National Portrait Gallery in London.
 He subsequently painted portraits from life of writers, musicians and artists such as Samuel Beckett, Harold Pinter, Brendan Behan, Garech Browne, Derry O'Sullivan, Alfred Schnittke, Ted Hughes, Rupert Everett and Yves Saint Laurent.
 In 1993 Gray had a retrospective exhibition at UNESCO Paris and in 2006, his portrait "The White Blouse" won the Sandro Botticelli Prize in Florence, Italy.
Paudge Rodger Behan ( ; born January 1965) is an Irish actor and writer.
 The son of IRA Chief of Staff Cathal Goulding and Beatrice ffrench-Salkeld, the widow of playwright Brendan Behan, Paudge Behan worked briefly as a journalist for a Dublin newspaper before turning to acting.
 After a series of minor film and television roles in the 1990s, he was handpicked by English novelist Barbara Taylor Bradford to appear as the male lead in a 1999 dramatisation of her book "A Secret Affair" (1996).
Borstal Boy is a 1958 autobiographical book by Brendan Behan.
 The story depicts a young, fervently idealistic Behan, who loses his naïveté over the three years of his sentence to a juvenile borstal, softening his radical Irish republican stance and warming to his British fellow prisoners.
 From a technical standpoint, the novel is chiefly notable for the art with which it captures the lively dialogue of the Borstal inmates, with all the variety of the British Isles' many subtly distinctive accents intact on the page.
 Ultimately, Behan demonstrated by his skillful dialogue that working class Irish Catholics and English Protestants actually had more in common with one another through class than they had supposed, and that alleged barriers of religion and ethnicity were merely superficial and imposed by a fearful middle class.
Peadar Kearney (Irish: "Peadar Ó Cearnaígh" ] ; 12 December 1883 – 24 November 1942) was an Irish republican and composer of numerous rebel songs.
 In 1907 he wrote the lyrics to "The Soldier's Song" ("Amhrán na bhFiann"), now the Irish national anthem.
 He was the uncle of Irish writers Brendan Behan, Brian Behan, and Dominic Behan.

Question: Who is one of the greatest Irish writers and poets of all time, Theodore H. White or Brendan Behan?
Answer: Brendan Francis Aidan Behan