William Grenville 1st Baron Grenville Tags: Prime Minister.William Wyndham Grenville 1st Baron Grenville PC PC (Ire) (25 October 1759 – 12 January 1834) was a British Whig statesman. He served as Prime Minister of the United Kingdom from 1806 to 1807 as head of the Ministry of All the Talents. thumbnail active years end date 1807-03-31 active years start date 1806-02-11 alma mater Christ Church Oxford birth date 1759-10-25 birth place Buckinghamshire, Wotton House death date 1834-01-12 death place Burnham Buckinghamshire, Dropmore Park monarch George III of the United Kingdom order in office Prime Minister of the United Kingdom party Tories (British political party), Whigs (British political party) successor William Cavendish-Bentinck 3rd Duke of Portland Learn more... Loading...