William Pitt, the Younger (28 May 1759 - 23 January 1806) was a British politician of the late eighteenth and early nineteenth centuries. He became the youngest Prime Minister in 1783, aged 24. He left office in 1801, but was Prime Minister again from 1804 until his death. He is known as "William Pitt the Younger" to distinguish him from his father, William Pitt the Elder, who also served as Prime Minister of Great Britain. He was officially The Hon. William Pitt due to his father being a peer, although he became The Rt Hon. William Pitt during his time in government.
The younger Pitt's prime ministerial tenure, which came during the reign of George III, was dominated by major events in Europe, including the French Revolution and the Napoleonic Wars. Pitt, although often referred to as a Tory, always considered himself to be an "independent Whig" and was generally opposed to the development of a strict partisan political system.