Robert Childers Barton (4 March 1881 – 10 August 1975) was an Irish nationalist, politician and farmer who participated in the negotiations leading up to the signature of the Anglo-Irish Treaty.
 His father was Charles William Barton and his mother was Agnes Childers.
 His wife was Rachel Warren of Boston, daughter of Fiske Warren.
 His double first cousin and close friend was Robert Erskine Childers.
Gormenghast is a fantasy series by British author Mervyn Peake, about the inhabitants of Castle Gormenghast, a sprawling, decaying, gothic-like structure.
 Originally conceived as a single on-going novel, the series was ended by Peake's death and comprises three novels, "Titus Groan" (1946), "Gormenghast" (1950), "Titus Alone" (1959) and a novella, "Boy in Darkness" (1956), whose canonical status is debated.
 Peake was writing a fourth novel, "Titus Awakes" at the time of his death, which was later completed and released by Peake's widow in 2009.
Gretchen Osgood Warren (19 March 1868 – September 1961), the wife of Fiske Warren, was an actress, singer and poet.
 The daughter of Dr. Hamilton Osgood and Margaret Cushing Osgood of Beacon Hill, Boston, Massachusetts, her younger sister was Mary Alden Childers, the wife of writer and Irish nationalist Robert Erskine Childers.
 Her nephew Erskine Hamilton Childers served as the fourth President of Ireland from 1973-74.
Mary Alden Osgood Childers, MBE (14 December 1875 – 1 January 1964) was an American-born Irish writer and Irish nationalist.
 She was the daughter of Dr Hamilton Osgood and Margaret Cushing Osgood of Beacon Hill, Boston, Massachusetts.
 Her older sister was Gretchen Osgood Warren.
 Molly married the writer and Irish nationalist, Robert Erskine Childers.
 Their son, Erskine Hamilton Childers, became the fourth President of Ireland.
Erskine Barton Childers (11 March 1929 – 25 August 1996) was an Irish writer, BBC correspondent and United Nations senior civil servant.
 He was the eldest son of Erskine Hamilton Childers (Ireland's fourth President) and Ruth Ellen Dow Childers.
 His grandparents Mary Alden Childers and Robert Erskine Childers and the latter's double first cousin Robert Barton were all Irish nationalists involved heavily with the negotiation of Irish independence; which ultimately led to his grandfather's execution during the Irish Civil War.
 His great aunt was Gretchen Osgood Warren.
The Riddle of the Sands: A Record of Secret Service is a 1903 novel by Erskine Childers.
 The book, which enjoyed immense popularity in the years before World War I, is an early example of the espionage novel and was extremely influential in the genre of spy fiction.
 It has been made into feature-length films for both cinema and television.
Robert Caesar Childers (1838 – 25 July 1876) was a British Orientalist scholar, compiler of the first Pāli-English dictionary.
 Childers was the husband of Anna Barton of Ireland.
 He was the father of Irish nationalist Robert Erskine Childers and grandfather to the fourth President of Ireland, Erskine Hamilton Childers.
Robert Erskine Childers DSC (25 June 1870 – 24 November 1922), universally known as Erskine Childers, was a British writer, whose works included the influential novel "The Riddle of the Sands", and a Fenian revolutionary who smuggled guns to Ireland in his sailing yacht "Asgard".
 He was executed by the authorities of the nascent Irish Free State during the Irish Civil War.
 He was the son of British Orientalist scholar Robert Caesar Childers; the cousin of Hugh Childers and Robert Barton; and the father of the fourth President of Ireland, Erskine Hamilton Childers.
Mervyn Laurence Peake (9 July 1911 – 17 November 1968) was an English writer, artist, poet, and illustrator.
 He is best known for what are usually referred to as the "Gormenghast" books.
 The three works were part of what Peake conceived as a lengthy cycle, the completion of which was prevented by his death.
 They are sometimes compared to the work of his older contemporary J. R. R. Tolkien, but his surreal fiction was influenced by his early love for Charles Dickens and Robert Louis Stevenson rather than Tolkien's studies of mythology and philology.
Boy in Darkness is a novella written by Mervyn Peake.
 It was first published in 1956 by Eyre & Spottiswoode as part of the anthology "Sometime, Never: Three Tales of Imagination" (with other stories by William Golding and John Wyndham).
 A corrupt version of "Boy in Darkness" was published both in an anthology, "The Inner Landscape" (1969), and separately in 1976 with an introduction by Peake's widow, Maeve Gilmore.
 Referring to the corrupt text, she wrote that "although the Boy in "Boy in Darkness" is assuredly Titus Groan, [Peake] did not call him so by name"; however, adding the name Titus was one of the specific changes that Peake made between writing and publishing his novella.
 The correct text has recently become available again in an anthology entitled "Boy in Darkness and Other Stories", with a foreword by Joanne Harris and a preface by Peake's son Sebastian, as well as Maeve Gilmore's uncorrected introduction from 1976.

Question: In regards to Mervyn Peake and Robert Erskine Childers, whose works included the influential novel "The Riddle of the Sands."
Answer: Robert Erskine Childers