1. William 1708-1778 Earl of Chatham; the Elder Pitt British statesman
2. The Younger (1759-1806) British Tory prime minister 1783–1801 and 1804–06. He raised the importance of the House of Commons, clamped down on corruption, carried out fiscal reforms, and effected the union with Ireland. He attempted to keep Britain at peace but underestimated the importance of the French Revolution and became embroiled in wars with France from 1793; he died on hearing of Napoleon's victory at Austerlitz.
Son of William Pitt the Elder, he entered Cambridge University at the age of 14 and Parliament at 22. He was the Whig prime minister William Shelburne's chancellor of the Exchequer 1782–83, and with the support of the Tories and king's friends became Britain's youngest prime minister 1783.
the Elder 1st Earl of Chatham (1708-1778) British Whig politician, “the Great Commoner”. As paymaster of the forces 1746–55, he broke with tradition by refusing to enrich himself; he was dismissed for attacking the Duke of Newcastle, the prime minister. He served effectively as prime minister in coalition governments 1756–61 (successfully conducting the Seven Years’ War) and 1766–68.
Entering Parliament 1735, Pitt led the Patriot faction opposed to the Whig prime minister Walpole and attacked Walpole's successor, Carteret, for his conduct of the War of the Austrian Succession. He championed the Americans against the king, though rejecting independence, and collapsed during his last speech in the House of Lords—opposing the withdrawal of British troops—and died a month later.