Harriet Elizabeth Georgiana Sutherland-Leveson-Gower, Duchess of Sutherland (née Howard; 21 May 1806 – 27 October 1868), styled The Honourable Harriet Howard before her marriage, was Mistress of the Robes under several Whig administrations: 1837–1841, 1846–1852, 1853–1858, and 1859–1861; and a great friend of Queen Victoria. She was an important figure in London's high society, and used her social position to undertake various philanthropic undertakings including the protest of the English ladies against American slavery. Family and early life Harriet was the third daughter of George Howard, 6th Earl of Carlisle and his wife Lady Georgiana Cavendish, who was a daughter of Georgiana, Duchess of Devonshire. Marriage On 18 May 1823 she married her cousin George Sutherland-Leveson-Gower, Earl Gower (1786–1861), who had been elected MP for St Mawes, Cornwall (a rotten borough) in 1808, and succeeded his father as second Duke of Sutherland in 1833. Gower was twenty years older than she, but their union proved one of affection and produced four sons and seven daughters. The Duchess of Sutherland held a social position of high influence, aided by her friendship to Queen Victoria as well as her family's great wealth. By the Duchess's influence Stafford House, St. James's Palace, became an important centre of society, and the starting-point of various philanthropic undertakings. The Duchess helped organise the "Stafford House Address" petition against slavery, and former American First Lady Julia Tyler wrote a defence of slavery titled "The Women of England vs. the Women of America", in response to it. In response to "The Women of England vs. the Women of America", former slave Harriet Jacobs wrote a letter to the New York Tribune which was her first published writing; it was published in 1853 and signed "Fugitive". The Duchess's stance on slavery was heavily criticised by Karl Marx because her mother-in-law, the previous Duchess, had been closely associated with the clearance of the inhabitants of Sutherland thirty years earlier, so that she could reuse 794,000 acres (3200 km2) of land for commercial sheep farming. Mistress of the Robes On the accession of Queen Victoria the Duchess was appointed Mistress of the Robes, and held that post whenever the Whigs were in office until her husband's death (August 1837 to September 1841, July 1846 to March 1852, January 1853 to February 1858, June 1859 to April 1861). In that role, she presided at the coronation of Queen Victoria in 1838. From