'George III', (1738-1820), 1830. George III (1738-1820) King of Great Britain and Ireland from 1760 until union of the two countries in 1801, then King of the United Kingdom of Great Britain and Ireland until his death. His reign was marked by the Seven Years' War, the American War of Independence and the Battle of Waterloo. From "Biographical Illustrations", by Alfred Howard. [Thomas Tegg, R. Griffin and Co., J. Cumming, London, Glasgow and Dublin, 1830] From "Biographical Illustrations", by Alfred Howard. [Thomas Tegg, R. Griffin and Co., J. Cumming, London, Glasgow and Dublin, 1830]