Were George III of Great Britain and Napoleon alive at the same time?
Yes. George III of Great Britain and Napoleon were alive at the same time for 50 years, from 1769 to 1820.
George III of Great Britain was 31 when Napoleon was born.
Napoleon was 50 when George III of Great Britain died, aged 81.
George III of Great Britain
King of Great Britain and Ireland from 1760 to 1820
Born 24 May 1738 (Julian calendar) · died 29 January 1820, aged 81
Napoleon
French military leader, French Emperor 1804–1814 and again in 1815
Born 15 August 1769 · died 5 May 1821, aged 51