1754, he died at his London townhouse at 6 Upper Brook Street. After his death, Leveson-Gower's titles were inherited by Granville, while his position as Lord Privy Seal was succeeded by Charles Spencer, 3rd Duke of Marlborough. His death was recorded in a letter written by English writer, bluestocking and artist Mary Delany on December 28, who noted as per custom that women who mourned Leveson-Gower's passing wore only grey or white clothing for a week. Personal life, family and legacy After his father's death, Leveson-Gower inherited Trentham Estate from him. In 1730, he erected Trentham Hall, an English country house, on the property, basing it on the design of Buckingham House. When Granville inherited the estate at Trentham from Leveson-Gower, which included the country house, he substantially altered it based on designs supplied by architect Henry Holland from 1775 to 1778. It was further altered from 1833 to 1842 by George Sutherland-Leveson-Gower, 2nd Duke of Sutherland, who employed Sir Charles Barry to carry out the renovations. Leveson-Gower's extensive political career was supported by his vast personal estate, which consisted in part of investments in Britain's industrial production sector and ownership of financial shares in eight other estates, including those of fellow noblemen Willem van Keppel, 2nd Earl of Albemarle and William Pulteney, 1st Earl of Bath. However, the high costs of electoral campaigning combined with family expenses took a heavy toll on his estate, and by Leveson-Gower's death in 1754, he owed outstanding debts to the tune of £37,861 along with roughly £36,000 in legacies. Over the course of his life, Leveson-Gower married thrice. On 13 March 1712, he married Lady Evelyn Pierrepont, the daughter of Evelyn Pierrepont, 1st Duke of Kingston-upon-Hull. They had eleven children, including Granville and Gertrude, before she died on 26 June 1727. After her death, Leveson-Gower remarried to Penelope Stonhouse on 31 October 1733, though she soon died on 19 August 1734. Leveson-Gower's third and final wife was Lady Mary Tufton, whom he married on 16 May 1736. Mary had two sons with him, surviving his death and dying on 9 February 1785. Granville, who chose to follow his father into a career in politics, also served as Lord Privy Seal, succeeding to the position in 1755 after the 3rd Duke of Marlborough and holding it until 1757. He would go on to be granted the title of Marquess of Stafford in 1786 by