Pitt 1, William. First Earl of Chatham. Referred To As "Pitt the Elder.” 1708-1778. British political leader and orator who directed his nation's armed forces effort through the Seven Years' War (1756-1763).
Pitt 2, William. Second Earl of Chatham. Generally "Pitt the Younger.” 1759-1806. Uk prime minister (1783-1801 and 1804-1806). He accomplished the Act of Union between Ireland and Britain (1800) but ended up being unsuccessful in his attempts to produce Catholic emancipation.