Question: Who is the son of the painter of The Last Sleep of Arthur in Avalon?

full_context: Document 1: Renana Jhabvala: Renana Jhabvala was born in Delhi to the Booker Prize winning novelist and screen-writer, Ruth Prawer Jhabvala, and well-known architect Cyrus S. H. Jhabvala. Her grandparents were active in public life during the early to mid part of the twentieth century. Her grandfather, Shavaksha Jhabvala, was active in the early Indian trade union movement, and her grandmother, Mehraben Jhabvala, in the emerging women's movement. In a February 2012 talk given at the India International Centre (Delhi), Renana spoke about the work of Mehraben, who was a dedicated organiser and advocate of women and the President of the All-India Women's Conference from 1965–68.
Document 2: Godfrey Baring: A member of the influential Baring family, he was the son of Lieutenant-General Charles Baring, son of Henry Bingham Baring, son of Henry Baring, third son of Sir Francis Baring, 1st Baronet. His mother was Helen Graham, daughter of Sir James Graham, 2nd Baronet. He was a lifelong resident of the Isle of Wight. He became involved in politics and public affairs at an early age: he was elected president of the Isle of Wight Liberal Union aged 23, was made a Justice of the Peace a year later and was High Sheriff of Hampshire in 1897 at the age of 26. In 1898 he became chairman of the Isle of Wight County Council, a position he held for the rest of his life.
Document 3: The Merciful Knight: The Merciful Knight is a watercolour by the pre-Raphaelite artist Edward Burne-Jones which was completed in 1863 and is currently housed at the Birmingham Museum & Art Gallery.
Document 4: The Beguiling of Merlin: The Beguiling of Merlin is a painting by the British Pre-Raphaelite painter Edward Burne-Jones that was created between 1872 and 1877.
Document 5: The Last Sleep of Arthur in Avalon: The Last Sleep of Arthur in Avalon is a painting by Edward Burne-Jones, started in 1881. The massive painting measures 279 cm × 650 cm, and is widely considered to be Burne-Jones's "magnum opus".
Document 6: Georgiana Burne-Jones: Georgiana Burne-Jones, Lady Burne-Jones (Birmingham, 21 July 1840 – 2 February 1920), the second oldest of the Macdonald sisters, was the wife of Pre-Raphaelite Brotherhood artist Edward Burne-Jones, mother of painter Philip Burne-Jones, aunt of novelist Rudyard Kipling, confidante and friend of George Eliot, William Morris, and John Ruskin something of a painter and engraver in her own right. She was a Trustee of the South London Gallery and was elected to the parish Council of Rottingdean, near Brighton in Sussex.
Document 7: India Jane Birley: Born in London, she is the daughter of Lady Annabel Vane-Tempest-Stewart, from her marriage to nightclub mogul Mark Birley. She has two brothers, Rupert (presumed deceased) and Robin; and three half-siblings, Zac, Jemima, and Ben Goldsmith from her mother's affair with James Goldsmith, the man who would become her second husband.
Document 8: Isabella Bird: Isabella Lucy Bird, married name Bishop (15 October 1831 – 7 October 1904), was a nineteenth-century British explorer, writer, photographer, and naturalist. With Fanny Jane Butler she founded the John Bishop Memorial hospital in Srinagar. She was the first woman to be elected Fellow of the Royal Geographical Society.
Document 9: The Golden Stairs: The Golden Stairs is one of the best-known paintings by the Pre-Raphaelite artist Edward Burne-Jones. It was begun in 1876 and exhibited at the Grosvenor Gallery in 1880.
Document 10: Daphne du Maurier: Daphne du Maurier was born in London, the middle of three daughters of prominent actor-manager Sir Gerald du Maurier and actress Muriel Beaumont. Her mother was a maternal niece of journalist, author, and lecturer William Comyns Beaumont. Her grandfather was author and "Punch" cartoonist George du Maurier, who created the character of Svengali in the novel "Trilby". Her elder sister, Angela du Maurier, also became a writer, and her younger sister Jeanne was a painter.
Document 11: The Legend of Briar Rose: The Legend of Briar Rose is the title of a series of paintings by the Pre-Raphaelite artist Edward Burne-Jones which were completed between 1885 and 1890. The four original paintings – The Briar Wood, The Council Chamber, The Garden Court and The Rose Bower – and an additional ten adjoining panels, are located at Buscot Park in Oxfordshire, England.
Document 12: Elizabeth Jane Gardner: Elizabeth Jane Gardner (October 4, 1837 – January 28, 1922) was an American academic and salon painter, who was born in Exeter, New Hampshire. She was an American expatriate who died in Paris where she had lived most of her life. She studied in Paris under the figurative painter Hugues Merle (1823–1881), the well-known salon painter Jules Joseph Lefebvre (1836–1911), and finally under William-Adolphe Bouguereau (1825–1905). After Bouguereau's wife died, Gardner became his paramour and after the death of his mother, who bitterly opposed the union, she married him in 1896. She adopted his subjects, compositions, and even his smooth facture, channeling his style so successfully that some of her work might be mistaken for his. In fact, she was quoted as saying, "I know I am censured for not more boldly asserting my individuality, but I would rather be known as the best imitator of Bouguereau than be nobody!"
Document 13: Pygmalion and the Image series: Pygmalion and the Image is the second series of four oil paintings in the Pygmalion and Galatea series by the Pre-Raphaelite artist Edward Burne-Jones which was completed between 1875 and 1878. The two collections may be seen below, in the Gallery, the first being now owned by Lord Lloyd Webber, and the second housed at the Birmingham Museum & Art Gallery. This article deals with an appraisal of the second series.
Document 14: Hope (Burne-Jones): Hope is a late oil painting by the Pre-Raphaelite artist Edward Burne-Jones. It was painted on commission for Mrs. George Marston Whitin of Whitinsville, Massachusetts in 1896.
Document 15: Harriet Harman: John Bishop Harman, a Harley Street physician and his wife Anna née Spicer, a solicitor. Anna Harman was the Liberal Party candidate for Hertford in the 1964 General Election. Her parents each had non-conformist backgrounds – her paternal grandfather Nathaniel Bishop Harman, an ophthalmic surgeon, was a prominent Unitarian and the Spicer family were well known Congregationalists. Her paternal aunt was Elizabeth Pakenham, Countess of Longford (née Harman), and her cousins include the writers Lady Antonia Fraser (née Pakenham, a first cousin), Rachel Billington, and Thomas Pakenham. Harman is a great-great niece of the Liberal statesman  Joseph Chamberlain and is also related to Richard Chamberlain, MP.
ground_truth: Philip Burne-Jones
sub_queries: The The Last Sleep of Arthur in Avalon was made by whom? Answer: Edward Burne-Jones
Edward Burne-Jones >> child Answer: Philip Burne-Jones