William Cavendish, 5th Duke of Devonshire (1748–1811) Lady Dorothy Cavendish (27 August 1750 – 3 June 1794). Married William Cavendish-Bentinck, 3rd Duke of Portland, who also became Prime Minister. Lord Richard Cavendish (1752–1781) George Augustus Henry Cavendish, created 1st Earl of Burlington of the second
William Cavendish, 4th Duke of Devonshire (1720 – 2 October 1764) Lord George Augustus Cavendish (died 2 May 1794), died unmarried. Lady Elizabeth Cavendish (born before 1727 – died 1796), married John Ponsonby and had issue. Lady Rachel Cavendish (7 June 1727 – 8 May 1805), who married Horatio Walpole, 1st Earl of Orford.
William George Spencer Cavendish (21 mai 1790 – 18 janvier 1858), 6 e duc de Devonshire, chevalier de la Jarretière, membre du Conseil privé  et pair du Royaume-Uni, est un homme politique whig.
William Cavendish, 1st Duke of Devonshire (1640–1707) Charles Cavendish, died unmarried on 3 March 1671. Lady Anne Cavendish (c. 1650–1703  ), married Charles, Lord Rich, son of the Earl of Warwick; and then John Cecil, 5th Earl of Exeter on 2 May 1670 and had issue.
William Cavendish, 5th Duke of Devonshire, KG (14 December 1748 – 29 July 1811), was a British nobleman, aristocrat, and politician. He was the eldest son of William Cavendish, 4th Duke of Devonshire , by his wife, the heiress Lady Charlotte Boyle , suo jure Baroness Clifford, who brought in considerable money and estates to the Cavendish family.
Early life. Cavendish was the son of William Cavendish (1783–1812) and the Honourable Louisa O'Callaghan (d. 1863). His father was the eldest son of Lord George Cavendish (later created, in 1831, the 1st Earl of Burlington, by the second creation), third son of the 4th Duke of Devonshire and Lady Charlotte Boyle, daughter of the 3rd Earl of Burlington and 4th Earl of Cork.
Lieutenant General Lord William Henry Cavendish-Bentinck GCB GCH PC (14 September 1774 – 17 June 1839), known as Lord William Bentinck, was a British soldier and statesman who served as the Governor of Fort William from 1828 to 1834 and the First Governor-General of India from 1834 to 1835.