Question: When did Lawrence Durrell’s youngest brother write their debut book?

Context paragraphs:
Livia (novel): Livia, or Buried Alive (1978), is the second volume in British author Lawrence Durrell's "The Avignon Quintet," published from 1974 to 1985.  Durrell has described the novels as "roped together like climbers on a rockface, but all independent . . . a series of books through which the same characters move for all the world as if to illustrate the notion of reincarnation."  The first novel of the quincunx, "Monsieur," received the James Tait Black Memorial Prize in 1974.

The Overloaded Ark: The Overloaded Ark, first published in 1953, is the debut book by British naturalist Gerald Durrell.  It is the chronicle of a six months collecting trip to the West African colony of British Cameroon - now Cameroon - (Dec 1947 - Aug 1948) - that Durrell made with the highly regarded aviculturist and ornithologist John Yealland.

Louisa Durrell: Louisa Florence Durrell, born Louisa Florence Dixie (16 January 1886 – 24 January 1964), was an Anglo-Irish woman born in India during the British Raj.  She married and had four children, including novelist Lawrence Durrell and naturalist Gerald Durrell.  She was featured as the character of "Mother" in her son Gerald Durrell's autobiographical "Corfu Trilogy," published from 1954 to 1978, about the family's years in Corfu from 1935 to 1939.

Richard Pine: Richard Pine (born 21 August 1949) is the author of critical works on the Irish playwright Brian Friel and the Anglo-Irish novelist Lawrence Durrell.  He worked for the Irish national broadcaster RTÉ Raidió Teilifís Éireann before moving to Greece in 2001 to found the Durrell School of Corfu which he directed until 2010.  In 2012, to mark the centenary of the birth of Lawrence Durrell, Pine edited and introduced a previously unpublished novel by Durrell, "Judith".  He writes a column on Greek affairs for The Irish Times and is an obituarist for The Guardian.  His work on Friel has been described by the writer and critic David Ian Rabey as 'immensely stimulating, courageous and encouraging ...' Lawrence Durrell described Pine's work as 'the best unpacking of my literary baggage I have heard'

Lawrence Durrell Collection: The Lawrence Durrell Collection is a special collection of books and periodicals by, about or associated with the novelist and poet Lawrence Durrell, donated to the British Library by Alan G. Thomas.

Margaret Durrell: Margaret "Margo" Isabel Mabel Durrell (4 May 1920 — 16 January 2007) was the younger sister of novelist Lawrence Durrell, and elder sister of naturalist, author and TV presenter Gerald Durrell, whose "Corfu Trilogy" of novels — "My Family and Other Animals", "Birds, Beasts and Relatives" and "The Garden of the Gods" — lampoons her character.

Gerald Durrell: Gerald Malcolm Durrell, OBE (7 January 1925 – 30 January 1995) was a British naturalist, zookeeper, conservationist, author and television presenter.  He founded what are now called the Durrell Wildlife Conservation Trust and the Durrell Wildlife Park on the Channel Island of Jersey in 1959.  He wrote a number of books based on his life as an animal collector and enthusiast.  He was the youngest brother of novelist Lawrence Durrell.

Alan G. Thomas: Alan Gradon Thomas (19 October 1911, Hampstead, London - 3 August 1992), was an English bibliophile.  He was both a friend of Lawrence Durrell and scholar of his works.  After Durrell's death, Thomas donated a significant collection of books, journals and other materials of or pertaining to Durrell to the British Library.  This is maintained as the Lawrence Durrell Collection.

Panic Spring: Panic Spring is a novel by Lawrence Durrell, published in 1937 by Faber and Faber in Britain and Covici-Friede in the United States under the pseudonym Charles Norden.  It is set on a fictional Greek Island, Mavrodaphne, in the Ionian Sea somewhere between Patras, Kephalonia, and Ithaca.  The island, however, resembles Corfu strongly, and in at least one inscribed copy of the novel, Durrell includes a map of Corfu identified as Mavrodaphne.

Lawrence Samuel Durrell: Lawrence Samuel Durrell (23 September 1884 – 16 April 1928) was a British Indian subject and engineer, and is best remembered as the father of novelist Lawrence Durrell and naturalist Gerald Durrell.  He was an Anglo-Indian in the sense that he was of English descent and brought up in India.

Supporting paragraphs: The Overloaded Ark Gerald Durrell
Answer: 1953