William Beauclerk, 8th Duke of St Albans (18 December 1766 – 17 July 1825) was the son of Aubrey Beauclerk, 5th Duke of St Albans.
He married, firstly, Charlotte Thelwell (c. 1769 – 19 October 1797), on 20 July 1791.
He married, secondly, Maria Janetta Nelthorpe (c. 1779 – 17 January 1822), on 4 March 1799. They had thirteen children:
Lady Maria Amelia Beauclerk (1800 – 9 July 1873), died unmarried.William Beauclerk, 9th Duke of St Albans (24 March 1801 – 27 May 1849)Lady Charlotte Beauclerk (4 April 1802 – 12 August 1842), died unmarried.Lady Caroline Janetta Beauclerk (28 June 1804 – 22 August 1862), married Arthur Capell, 6th Earl of Essex and had issue.Lord John Nelthorpe Beauclerk (9 December 1805 – August 1810); buried 4 August 1810Lady Louisa Georgiana Beauclerk (28 December 1806 – 18 February 1843), married Thomas HughanCaptain Lord Frederick Charles Peter Beauclerk (28 June 1808 – 17 November 1865), married Jemima Johnstone and had issue.Lady Georgiana Beauclerk (1809 – 8 January 1880), married Sir Montague Cholmeley, 2nd Bt.Lady Mary Noel Beauclerk (28 December 1810 – 29 November 1850), married Thomas G. Corbett and had issue. Descendants include Samantha Cameron, wife of former Conservative Leader and British Prime Minister David Cameron.Lord Henry Beauclerk (23 June 1812 – 22 January 1856), died unmarried.Lord Charles Beauclerk (10 October 1813 – 2 November 1861), married Laura Stopford and had issue.Captain Lord Amelius Wentworth Beauclerk (16 August 1815 – 24 March 1879), married Frances Harrison and had issue.Lord George Augustus Beauclerk (14 December 1818 – 3 January 1880), died unmarried.