– 30 December 1909), unmarried. Lady Margaret Percy (30 August 1873 – 29 January 1934), unmarried. Lady Victoria Alexandra Percy (12 February 1875 – 18 January 1958), married Sir Robert Tidmarsh. Hon. Josceline Percy (26 January 1876 – 31 January 1898), unmarried. Hon. Ralph William Percy (9 March 1877 – 28 March 1889), died in childhood. Lady Mary Percy (30 August 1878 – 18 March 1965). Married Aymer Edward Maxwell and was the mother of author and naturalist Gavin Maxwell. Alan Ian Percy, 8th Duke of Northumberland (17 April 1880 – 23 August 1930). Lord William Richard Percy (17 May 1882 – 8 February 1963), married Mary Swinton, daughter of Captain George Sitwell Campbell Swinton. Lord James Percy (6 January 1885 – 20 May 1903), died unmarried. Eustace Sutherland Campbell Percy, 1st Baron Percy of Newcastle (21 March 1887 – 3 April 1958). Lady Muriel Evelyn Nora Percy (14 July 1890 – 23 November 1956), unmarried. The Duchess of Northumberland died in July 1913, aged 63. Northumberland survived her by five years and died in May 1918, aged 71. References External links |- 1846 births 1918 deaths Fellows of the Royal Society Chancellors of Durham University 307 Knights of the Garter Lord High Stewards Lord-Lieutenants of Northumberland Percy, Henry Percy, Earl Percy Members of the Privy Council of the United Kingdom Percy, Henry Percy, Earl Percy Percy, Henry Percy, Earl Percy Percy, Henry Percy, Earl Percy Northumberland, D7 Henry Percy, 07th Duke of Northumberland Treasurers of the Household British landowners Members of Middlesex County Council 19th-century British businesspeople Surtees Society Presidents of the Royal Archaeological Institute