George IV was King of the United Kingdom of Great Britain and Ireland and King of Hanover from 29 January 1820 until his death in 1830. At the time of his accession to the throne, he was acting as prince regent for his father, King George III, having done so since 5 February 1811 during his father's final mental illness.
Portrait by Thomas Lawrence, 1821
George (left) with his mother, Queen Charlotte, and younger brother, Frederick. Portrait by Allan Ramsay, 1764
Portrait miniature by Richard Cosway, c. 1780–82
Mezzotint engraving by Samuel William Reynolds, based on a painting by Sir Joshua Reynolds, 1785
The King of Hanover was the official title of the head of state and hereditary ruler of the Kingdom of Hanover, beginning with the proclamation of King George III of the United Kingdom, as "King of Hanover" during the Congress of Vienna, on 12 October 1814 at Vienna, and ending with the kingdom's annexation by Prussia on 20 September 1866.
Last to reign George V 18 November 1851 – 20 September 1866
Image: George I of Great Britain 1715
Image: British School Portrait of King George II in armour
Image: George, Prince of Wales, later George III, 1754 by Liotard