Question: What is the date of birth for the author of the poem The Story of Sigurd the Volsung?

full_context: Document 1: Fight for Right: "Fight for Right" is a song written by the English composer Edward Elgar, with words taken from "The Story of Sigurd the Volsung" by William Morris.
Document 2: William Blake: William Blake (28 November 1757 – 12 August 1827) was an English poet, painter, and printmaker. Largely unrecognised during his lifetime, Blake is now considered a seminal figure in the history of the poetry and visual arts of the Romantic Age. What he called his prophetic works were said by 20th century critic Northrop Frye to form "what is in proportion to its merits the least read body of poetry in the English language". His visual artistry led 21st-century critic Jonathan Jones to proclaim him "far and away the greatest artist Britain has ever produced". In 2002, Blake was placed at number 38 in the BBC's poll of the 100 Greatest Britons. Although he lived in London his entire life (except for three years spent in Felpham), he produced a diverse and symbolically rich "œuvre", which embraced the imagination as "the body of God" or "human existence itself".
Document 3: Tribe Fight Song: The Tribe Fight Song is the official fight song of The College of William & Mary, located in Williamsburg, Virginia. Throughout the College's history there have been three official fight songs. The original fight song, titled "Victory", was written in 1929 by Oscar E. Wilkinson. Two years later, a new fight song titled "Fight, Fight, Fight for the Indians" was published in the William & Mary student handbook. Many years later, a third edition was written which is still used today. Simply "Tribe Fight Song", it is supposed to be sung after every touchdown the Tribe football team scores at home games.
Document 4: Falstaff (Elgar): Falstaff – Symphonic Study in C minor, Op. 68, is an orchestral work by the English composer Edward Elgar. Though not so designated by the composer, it is a symphonic poem in the tradition of Franz Liszt and Richard Strauss. It portrays Sir John Falstaff, the "fat knight" of William Shakespeare's "Henry IV" Parts 1 and 2.
Document 5: Eton Boating Song: The "Eton Boating Song" is the best known of the school songs associated with Eton College that are sung at the end of year concert and on other important occasions. It is also played during the procession of boats. The words of the song were written by William Johnson Cory, an influential Master at the school. The melody was composed by an Old Etonian and former pupil of Cory, Captain Algernon Drummond and transcribed by T. L. Mitchell-Innes. The piano accompaniment was written by Evelyn Wodehouse. It was first performed on 4 June 1863. Ordinarily, only the first, sixth, seventh and eighth stanzas are sung. Contrary to popular belief, the "Eton Boating Song" is not the school song of Eton College, that being "Carmen Etonense".
Document 6: George Orwell: Eric Arthur Blair (25 June 1903 – 21 January 1950), better known by his pen name George Orwell, was an English novelist, essayist, journalist, and critic. His work is marked by lucid prose, awareness of social injustice, opposition to totalitarianism, and outspoken support of democratic socialism.
Document 7: William Morris: William Morris (24 March 1834 – 3 October 1896) was an English textile designer, poet, novelist, translator, and socialist activist. Associated with the British Arts and Crafts Movement, he was a major contributor to the revival of traditional British textile arts and methods of production. His literary contributions helped to establish the modern fantasy genre, while he played a significant role in propagating the early socialist movement in Britain.
Document 8: John Ruskin: John Ruskin (8 February 1819 – 20 January 1900) was the leading English art critic of the Victorian era, as well as an art patron, draughtsman, watercolourist, a prominent social thinker and philanthropist. He wrote on subjects as varied as geology, architecture, myth, ornithology, literature, education, botany and political economy. His writing styles and literary forms were equally varied. Ruskin also penned essays and treatises, poetry and lectures, travel guides and manuals, letters and even a fairy tale. The elaborate style that characterised his earliest writing on art was later superseded by a preference for plainer language designed to communicate his ideas more effectively. In all of his writing, he emphasised the connections between nature, art and society. He also made detailed sketches and paintings of rocks, plants, birds, landscapes, and architectural structures and ornamentation.
Document 9: Bill Morris, Baron Morris of Handsworth: William Manuel Morris, Baron Morris of Handsworth, OJ, DL (born 19 October 1938), generally known as Bill Morris, is a former British trade union leader. He was General Secretary of the Transport and General Workers' Union from 1992 to 2003, and the first black leader of a major British trade union.
Document 10: The Story of Sigurd the Volsung and the Fall of the Niblungs: The Story of Sigurd the Volsung and the Fall of the Niblungs
Document 11: Kelmscott House: Kelmscott House is a Georgian brick mansion at 26 Upper Mall in Hammersmith, overlooking the River Thames. It was the London home of English textile designer, artist, writer and socialist William Morris from October 1878 until his death in October 1896.
Document 12: William Godwin: William Godwin (3 March 1756 – 7 April 1836) was an English journalist, political philosopher and novelist. He is considered one of the first exponents of utilitarianism, and the first modern proponent of anarchism. Godwin is most famous for two books that he published within the space of a year: "An Enquiry Concerning Political Justice", an attack on political institutions, and "Things as They Are; or, The Adventures of Caleb Williams", which attacks aristocratic privilege, but also is the first mystery novel. Based on the success of both, Godwin featured prominently in the radical circles of London in the 1790s. In the ensuing conservative reaction to British radicalism, Godwin was attacked, in part because of his marriage to the pioneering feminist writer Mary Wollstonecraft in 1797 and his candid biography of her after her death from childbirth. His daughter, Mary Godwin (later Mary Shelley) would go on to write "Frankenstein" and marry the poet Percy Bysshe Shelley. Godwin wrote prolifically in the genres of novels, history and demography throughout his lifetime. With his second wife, Mary Jane Clairmont, he wrote children's primers on Biblical and classical history, which he published along with such works as Charles and Mary Lamb's "Tales from Shakespeare". Using the pseudonym "Edward Baldwin", he wrote a variety of books for children, including a version of Jack and the Beanstalk. He also has had considerable influence on British literature and literary culture.
Document 13: Onward, Christian Soldiers: "Onward, Christian Soldiers" is a 19th-century English hymn. The words were written by Sabine Baring-Gould in 1865, and the music was composed by Arthur Sullivan in 1871. Sullivan named the tune "St. Gertrude," after the wife of his friend Ernest Clay Ker Seymer, at whose country home he composed the tune. The Salvation Army adopted the hymn as its favoured processional. The piece became Sullivan's most popular hymn. The hymn's theme is taken from references in the New Testament to the Christian being a soldier for Christ, for example II Timothy 2:3 (KJV): "Thou therefore endure hardness, as a good soldier of Jesus Christ."
Document 14: Blacksmith (song): "Blacksmith" (Roud 816) is a traditional English folk song, also known as "A Blacksmith Courted Me". The song was noted down by Ralph Vaughan Williams in 1909 from a Mrs Ellen Powell of Westhope near Weobley, Herefordshire. On that occasion it was sung to the tune "Monk's Gate", better known as the tune of "To be a pilgrim", the hymn by John Bunyan. The same tune is sometimes used for the song "Our Captain Cried". There is a setting by George Butterworth (a friend of Vaughan Williams and Cecil Sharp) in his 1912 collection "Folk Songs from Sussex" (recorded by Roderick Williams and Iain Burnside in the Naxos English Song Series 8.572426).
Document 15: Jane Morris: Jane Morris (née Jane Burden; 19 October 1839 – 26 January 1914) was an English artists' model who embodied the Pre-Raphaelite ideal of beauty. She was a model and muse to William Morris (1834–1896), the English textile designer, poet, novelist, translator, and socialist activist, whom she later married, and to Dante Gabriel Rossetti.
ground_truth: 24 March 1834