Colonel Lord William Cecil (2 November 1854 – 16 April 1943) was a British army officer and royal courtier.
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Early life
Lord William was born on 2 November 1854, a younger son of William Cecil, 3rd Marquess of Exeter (1825–1895) and Lady Georgina Sophia Pakenham (died 1909), daughter of Thomas Pakenham, 2nd Earl of Longford (1774–1835). His paternal grandparents were Brownlow Cecil, 2nd Marquess of Exeter (1795–1867), and Isabella Poyntz, daughter of William Stephen Poyntz (1770–1840), an English Whig and Liberal politician who sat in the House of Commons variously between 1800 and 1837.
His siblings included: Brownlow Henry George, Lord Burghley, later the 4th Marquess of Exeter (1849–1898), Lord Francis Horace Pierrepont (1851–1889), who married Edith Brookes, daughter of Sir William Cunliffe Brooks, 1st Baronet, Lady Catherine Sarah (1861–1918), who married Henry Vane, 9th Baron Barnard, Colonel Lord John Pakenham Joicey-Cecil (1867–1942), Lady Isabella Georgiana Katherine (died 1903), who married William Battie-Wrightson, Lady Mary Louisa Wellesley (died 1930), who married James Hozier, 2nd Baron Newlands, and Lady Louisa Alexandrina (died 1950) and Lady Frances Emily (died 1951), both of whom died unmarried.



