William Cavendish-Bentinck served twice as Prime Minister, briefly in 1783 and from 1807 to 1809: by what title is he better known?
William Cavendish-Bentinck, 3rd Duke of Portland William Cavendish-Bentinck, 3rd Duke of Portland William Henry Cavendish Cavendish-Bentinck, 3rd Duke of Portland, (14 April 1738 – 30 October 1809) was a British Whig and Tory politician during the late Georgian era. He served as Chancellor of the University of Oxford (1792–1809) and twice as British prime minister, of Great Britain (1783) and then of the United Kingdom (1807–09). The twenty-four years between his two terms as Prime Minister is the longest gap between terms of office of any British prime minister. Portland was known before 1762 by the courtesy title Marquess of Titchfield. He held a title of
William George Cavendish-Bentinck William George Cavendish-Bentinck William George Cavendish-Bentinck (6 March 1854 – 22 August 1909), was a member of parliament for Penryn and Falmouth between 1886 and 1895, who married into the American Livingston family. Cavendish-Bentinck was born on 6 March 1854 to The Rt. Hon. George Augustus Frederick Cavendish-Bentinck (1821–1891) and Prudentia Penelope Leslie (d. 1896), the daughter of Col. Charles Powell Leslie II (1769–1831). His father, a British barrister, Conservative politician, and cricketer who was also a member of parliament from 1859 to 1891, was the only son of Major-General Lord Frederick Cavendish-Bentinck (1781–1828), who was the fourth son of