George III was King of Great Britain and Ireland. He was born in 1738 and died in 1820. The son of Frederick, Prince of Wales, he succeeded to the throne of England in 1760 and regained for the throne much of its former power, taking that power away from the powerful Whigaristocracy. George was a conscientious King and a devoted father and husband; his interest in botany and farming earned him the nickname 'Farmer George'. In 1788 he became mentally deranged, although this may have been due to porphyria, a hereditary physical disorder. George recovered by 1789, but then relapsed, becoming permanently deranged in 1810. Research George III