William Pitt the Younger
William Pitt the Younger (28 May 1759 – 23 January 1806) was a British politician of the late eighteenth and early nineteenth centuries. He was Chancellor of the Exchequer from 1782 to 1783, 1783 to 1801 and 1804 to 1806. He was prime minister of the United Kingdom from 1783 to 1801, and 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. He became the youngest prime minister in 1783 at the age of 24. During his time as prime minister, the kingdom of Ireland joined with Great Britain and both kingdoms became the United Kingdom of Great Britain and Ireland on 1 January 1801. Pitt continued to be prime minister in the new Parliament of the United Kingdom. Known as "William Pitt Jr.", unlike his father and the Prime Minister of the United Kingdom, William Pitt Sr.