William Cavendish, 1st Duke of Devonshire English soldier, nobleman and Whig politician (1640-1707) (1640–1707) Parents Elizabeth Cecil, Countess of Devonshire William Cavendish, 3rd Earl of Devonshire Children William Cavendish, 2nd Duke of Devonshire Elizabeth Cavendish Lord James Cavendish Lord Henry Cavendish Siblings Anne Cecil, Countess of Exeter Partners Mary Campion Lady Mary Butler
