George IV (George Augustus Frederick; 12 August 1762 – 26 June 1830) was monarch of the United Kingdom from 1820 until his death in 1830. He succeeded his father, George III, but had served as Prince Regent from 1811, after George III had relapsed into mental illness. George IV was also King of Hanover. George IV did not engage in the business of actual government, instead preferring to indulge in leisurely and stylistic pursuits. He gained a reputation within his own life as being irresponsible.