, William First Earl of Chatham. Known as “Pitt the Elder.” 1708–1778.
British political leader and orator who directed his country's military effort during the Seven Years' War (1756–1763).
, William Second Earl of Chatham. Known as “Pitt the Younger.” 1759–1806.
British prime minister (1783–1801 and 1804–1806). He accomplished the Act of Union between Ireland and Britain (1800) but was unsuccessful in his efforts to achieve Catholic emancipation.