King George III of England (George William Frederick - 4 June 1738 - 29 January 1820) was King of Great Britain and King of Ireland from 25 October 1760 until 1 January 1801, and thereafter of the United Kingdom of Great Britain and Ireland until his death. He was concurrently Duke of Brunswick-Leburg (Hanover), and thus Archtreasurer and Prince-Elector of the Holy Roman Empire, and later King of Hanover. The Electorate became the Kingdom of Hanover on 12 October 1814. He was the third British monarch of the House of Hanover, and the first of Hanover to be born in Britain and speak English as his first language. In fact, he never visited Germany.