William Grenville, 1st Baron Grenville, English academic and politician, Prime Minister of the United Kingdom (d. 1834)
William Wyndham Grenville, 1st Baron Grenville, (25 October 1759 – 12 January 1834), styled as Lord Grenville from 1790, was a British Pittite Tory politician who served as Prime Minister of the United Kingdom from 1806 to 1807, but was a supporter of the Whigs for the duration of the Napoleonic Wars. As prime minister, his most significant achievement was the abolition of the slave trade in 1807. However, his government failed to either make peace with France or to accomplish Catholic emancipation and it was dismissed in the same year.