Question: What year did the employer of William Sharp die?

full_context: Document 1: Near East: This view reveals a somewhat less than altruistic Christian intent of the British Empire; however, it was paradoxical from the beginning, as Simpson and most other writers pointed out. The Ottomans were portrayed as the slavers, but even as the American and British fleets were striking at the Barbary pirates on behalf of freedom, their countries were promulgating a vigorous African slave trade of their own. Charles George Gordon is known as the saint of all British colonial officers. A dedicated Christian, he spent his time between assignments living among the poor and donating his salary on their behalf. He won Ottoman confidence as a junior officer in the Crimean War. In his later career he became a high official in the Ottoman Empire, working as Governor of Egypt for the Ottoman khedive for the purpose of conducting campaigns against slavers and slavery in Egypt and the Sudan.
Document 2: Regius Professor of Surgery (Glasgow): The Regius Chair of Surgery at the University of Glasgow was founded in 1815 by King George III, who also established the Chairs of Chemistry and Natural History.
Document 3: William Sharp (surgeon): William Sharp (1729 – 17 March 1810) was an English physician reported to have acted as surgeon to King George III. With his brother Granville Sharp, he was an active supporter of the early campaign against slavery in Britain.
Document 4: William Sharp (scientist): William Sharp is a biotechnologist and entrepreneur, who holds a PhD in plant cell biology from Rutgers University. He is well known for his application of science into business, creating both start up companies and extensive technology transfer experience across the Americas and Asia in a broad sector of business ventures.
Document 5: Brook Watson: Sir Brook Watson, 1st Baronet (7 February 1735 – 2 October 1807) was a British merchant, soldier, and later Lord Mayor of London. He is perhaps most famous as the subject of John Singleton Copley's painting "Watson and the Shark, "which depicts a shark attack on Watson as a boy that resulted in the loss of his right leg below the knee.
Document 6: Queen Victoria: In 1830, the Duchess of Kent and Conroy took Victoria across the centre of England to visit the Malvern Hills, stopping at towns and great country houses along the way. Similar journeys to other parts of England and Wales were taken in 1832, 1833, 1834 and 1835. To the King's annoyance, Victoria was enthusiastically welcomed in each of the stops. William compared the journeys to royal progresses and was concerned that they portrayed Victoria as his rival rather than his heiress presumptive. Victoria disliked the trips; the constant round of public appearances made her tired and ill, and there was little time for her to rest. She objected on the grounds of the King's disapproval, but her mother dismissed his complaints as motivated by jealousy, and forced Victoria to continue the tours. At Ramsgate in October 1835, Victoria contracted a severe fever, which Conroy initially dismissed as a childish pretence. While Victoria was ill, Conroy and the Duchess unsuccessfully badgered her to make Conroy her private secretary. As a teenager, Victoria resisted persistent attempts by her mother and Conroy to appoint him to her staff. Once queen, she banned him from her presence, but he remained in her mother's household.
Document 7: Queen Victoria: At the time of her accession, the government was led by the Whig prime minister Lord Melbourne, who at once became a powerful influence on the politically inexperienced Queen, who relied on him for advice. Charles Greville supposed that the widowed and childless Melbourne was "passionately fond of her as he might be of his daughter if he had one", and Victoria probably saw him as a father figure. Her coronation took place on 28 June 1838 at Westminster Abbey. Over 400,000 visitors came to London for the celebrations. She became the first sovereign to take up residence at Buckingham Palace and inherited the revenues of the duchies of Lancaster and Cornwall as well as being granted a civil list allowance of £385,000 per year. Financially prudent, she paid off her father's debts.
Document 8: Protestantism: Also, other human rights were advocated for by some Protestants. For example, torture was abolished in Prussia in 1740, slavery in Britain in 1834 and in the United States in 1865 (William Wilberforce, Harriet Beecher Stowe, Abraham Lincoln - against Southern Protestants). Hugo Grotius and Samuel Pufendorf were among the first thinkers who made significant contributions to international law. The Geneva Convention, an important part of humanitarian international law, was largely the work of Henry Dunant, a reformed pietist. He also founded the Red Cross.
Document 9: Queen Victoria: Victoria's father was Prince Edward, Duke of Kent and Strathearn, the fourth son of the reigning King of the United Kingdom, George III. Until 1817, Edward's niece, Princess Charlotte of Wales, was the only legitimate grandchild of George III. Her death in 1817 precipitated a succession crisis that brought pressure on the Duke of Kent and his unmarried brothers to marry and have children. In 1818 he married Princess Victoria of Saxe-Coburg-Saalfeld, a widowed German princess with two children—Carl (1804–1856) and Feodora (1807–1872)—by her first marriage to the Prince of Leiningen. Her brother Leopold was Princess Charlotte's widower. The Duke and Duchess of Kent's only child, Victoria, was born at 4.15 a.m. on 24 May 1819 at Kensington Palace in London.
Document 10: Queen Victoria: Though queen, as an unmarried young woman Victoria was required by social convention to live with her mother, despite their differences over the Kensington System and her mother's continued reliance on Conroy. Her mother was consigned to a remote apartment in Buckingham Palace, and Victoria often refused to see her. When Victoria complained to Melbourne that her mother's close proximity promised "torment for many years", Melbourne sympathised but said it could be avoided by marriage, which Victoria called a "schocking  [sic] alternative". She showed interest in Albert's education for the future role he would have to play as her husband, but she resisted attempts to rush her into wedlock.
Document 11: Sharp Delany: Sharp Delany (c. 1739–1799), was a Colonel in the American Revolutionary War and was appointed first Collector of Customs in Philadelphia by George Washington.
Document 12: George Amyand: Sir George Amyand, 1st Baronet (26 September 1720 – 16 August 1766) was a British Whig politician, physician and merchant.
Document 13: Queen Victoria: During Victoria's first pregnancy in 1840, in the first few months of the marriage, 18-year-old Edward Oxford attempted to assassinate her while she was riding in a carriage with Prince Albert on her way to visit her mother. Oxford fired twice, but either both bullets missed or, as he later claimed, the guns had no shot. He was tried for high treason and found guilty, but was acquitted on the grounds of insanity. In the immediate aftermath of the attack, Victoria's popularity soared, mitigating residual discontent over the Hastings affair and the bedchamber crisis. Her daughter, also named Victoria, was born on 21 November 1840. The Queen hated being pregnant, viewed breast-feeding with disgust, and thought newborn babies were ugly. Nevertheless, over the following seventeen years, she and Albert had a further eight children: Albert Edward, Prince of Wales (b. 1841), Alice (b. 1843), Alfred (b. 1844), Helena (b. 1846), Louise (b. 1848), Arthur (b. 1850), Leopold (b. 1853) and Beatrice (b. 1857).
Document 14: Queen Victoria: At birth, Victoria was fifth in the line of succession after her father and his three older brothers: the Prince Regent, the Duke of York, and the Duke of Clarence (later William IV). The Prince Regent and the Duke of York were estranged from their wives, who were both past child-bearing age, so the two eldest brothers were unlikely to have any further children. The Dukes of Kent and Clarence married on the same day 12 months before Victoria's birth, but both of Clarence's daughters (born in 1819 and 1820 respectively) died as infants. Victoria's grandfather and father died in 1820, within a week of each other, and the Duke of York died in 1827. On the death of her uncle George IV in 1830, Victoria became heiress presumptive to her next surviving uncle, William IV. The Regency Act 1830 made special provision for the Duchess of Kent to act as regent in case William died while Victoria was still a minor. King William distrusted the Duchess's capacity to be regent, and in 1836 declared in her presence that he wanted to live until Victoria's 18th birthday, so that a regency could be avoided.
Document 15: Queen Victoria: Victoria was the daughter of Prince Edward, Duke of Kent and Strathearn, the fourth son of King George III. Both the Duke of Kent and King George III died in 1820, and Victoria was raised under close supervision by her German-born mother Princess Victoria of Saxe-Coburg-Saalfeld. She inherited the throne aged 18, after her father's three elder brothers had all died, leaving no surviving legitimate children. The United Kingdom was already an established constitutional monarchy, in which the sovereign held relatively little direct political power. Privately, Victoria attempted to influence government policy and ministerial appointments; publicly, she became a national icon who was identified with strict standards of personal morality.
ground_truth: 1820
sub_queries: William Sharp >> employer Answer: King George III
What year did King George III die? Answer: 1820