William Cavendish, 7th Duke of Devonshire
William Cavendish, 7th Duke of Devonshire,  (27 April 1808 – 21 December 1891), styled Lord Cavendish of Keighley between 1831 and 1834 and Earl of Burlington between 1834 and 1858, was a British landowner, benefactor, nobleman, and politician.