George IV of Great Britain (1762–1830)

George IV (1762–1830), seen here as a young prince, ruled the British kingdom from 1820 to 1830.

Joseph Collyer (1748–1827), His royal highness George Prince of Wales, copperplate engraving, 1792, from a painting by John Russell; image source: Library of Congress, http://www.loc.gov/pictures/item/93506651/.