Question: When was the  English poet and children's writer died who prepared  Crossing the Water for publication?

Context articles: Holy Sonnets
Thomas Hood
Crossing the Water
A Voice Through a Cloud
The Authors' Circular
Anne Killigrew
Memoir (John McGahern book)
Takiji Kobayashi
Ted Hughes
Philip Larkin

The Holy Sonnets—also known as the Divine Meditations or Divine Sonnets—are a series of nineteen poems by the English poet John Donne (1572–1631).
 The sonnets were first published in 1633—two years after Donne's death.
 The poems are sonnets and are predominantly in the style and form prescribed by Renaissance Italian poet Petrarch (or Francesco Petrarca) (1304–1374) in which the sonnet consisted of two quatrains (four-line stanzas) and a sestet (a six-line stanza).
 However, several rhythmic and structural patterns as well as the inclusion of couplets are elements influenced by the sonnet form developed by English poet and playwright William Shakespeare (1564–1616).
Thomas Hood (23 May 1799 – 3 May 1845) was an English poet, author and humorist, best known for poems such as "The Bridge of Sighs" and "The Song of the Shirt".
 Hood wrote regularly for "The London Magazine", the "Athenaeum", and "Punch".
 He later published a magazine largely consisting of his own works.
 Hood, never robust, lapsed into invalidism by the age of 41 and died at the age of 45.
 William Michael Rossetti in 1903 called him "the finest English poet" between the generations of Shelley and Tennyson.
 Hood was the father of playwright and humourist Tom Hood (1835–1874).
Crossing the Water is a 1971 posthumous collection of poetry by Sylvia Plath that was prepared for publication by Ted Hughes.
 These are transitional poems that were written along with the poems that appear in her poetic opus, "Ariel".
 The collection was published in the UK by Faber & Faber (1975) and in the USA by Harper & Row (1976).
A Voice Through a Cloud is an autobiographical novel by Denton Welch, who became a writer after a serious accident which had long-term effects on his health.
 The book describes his bicycle accident when he was an art student, and subsequent experiences in hospitals wards and a nursing home.
 The book was almost complete when the writer died in December 1948 aged 33.
The Authors' Circular was a short-lived monthly publication of 16 pages running from January to April 1898, the "Authors' Circular" was subtitled the "Official Organ of the English School of Journalism".
 It aimed to "foster business relations between those who write and those who publish," reflecting the increased professionalization of journalism.
 Advice on pitching to editors and defending intellectual property, gossip about the literary scene, insight into the means by which editors selected copy for publication, and a correspondence section in which such issues were discussed made up the bulk of the magazine.
 The syllabus for the English School of Journalism (which prepared students for the examinations of the Institute of Journalists was printed in each issue, giving insight into the practical art of journalism as it was then conceived.
 Early in 1898, Charles Norris, secretary of the English School of Journalism, who was intimately involved in the production of its journal, died which destabilised the publication and its continuation.
Anne Killigrew (1660–1685) was an English poet.
 Born in London, Killigrew is perhaps best known as the subject of a famous elegy by the poet John Dryden entitled "To The Pious Memory of the Accomplish'd Young Lady Mrs. Anne Killigrew" (1686).
 She was however a skilful poet in her own right, and her "Poems" were published posthumously in 1686.
 Dryden compared her poetic abilities to the famous Greek poet of antiquity, Sappho.
 Killigrew died of smallpox aged 25.
Memoir (published in North America as "All Will Be Well") is an autobiographical account of the childhood of Irish writer John McGahern.
 It was published in 2005, and the writer died in 2006.
 It recalls, amongst other things, his formative years in Leitrim, Ireland, the death of his beloved mother, Susan, and his relationship with his dark and enigmatic father.
 Themes from his childhood experiences run throughout his canon of fiction.
Takiji Kobayashi (小林 多喜二 , Kobayashi Takiji , October 13, 1903 – February 20, 1933) was a Japanese author of proletarian literature.
 He is best known for his short novel "Kanikōsen", or "Crab Cannery Ship", a short novel published in 1929.
 It tells the story of several different people and the beginning of organization into unions of fishing workers.
 The young writer died due to violent torture after arrest by the "Tokkō" police two years later, at the age of 29.
Edward James Hughes, {'1': ", '2': ", '3': ", '4': "} (17 August 1930 – 28 October 1998) was an English poet and children's writer.
 Critics frequently rank him as one of the best poets of his generation, and one of the twentieth century's greatest writers.
 He served as Poet Laureate from 1984 until his death.
 In 2008 "The Times" ranked Hughes fourth on their list of "The 50 greatest British writers since 1945".
Philip Arthur Larkin (9 August 1922 – 2 December 1985) was an English poet, novelist and librarian.
 His first book of poetry, "The North Ship", was published in 1945, followed by two novels, "Jill" (1946) and "A Girl in Winter" (1947), and he came to prominence in 1955 with the publication of his second collection of poems, "The Less Deceived", followed by "The Whitsun Weddings" (1964) and "High Windows" (1974).
 He contributed to "The Daily Telegraph" as its jazz critic from 1961 to 1971, articles gathered in "All What Jazz: A Record Diary 1961–71" (1985), and he edited "The Oxford Book of Twentieth Century English Verse" (1973).
 His many honours include the Queen's Gold Medal for Poetry.
 He was offered, but declined, the position of Poet Laureate in 1984, following the death of Sir John Betjeman.