William IV of the United Kingdom William IV of the United Kingdom William IV (William Henry; 21 August 1765 – 20 June 1837) was King of the United Kingdom of Great Britain and Ireland and King of Hanover from 26 June 1830 until his death in 1837. The third son of George III, William succeeded his elder brother George IV, becoming the last king and penultimate monarch of Britain's House of Hanover. William served in the Royal Navy in his youth, spending time in North America and the Caribbean, and was later nicknamed the "Sailor King". In 1789, he was created Duke of Clarence and St
Coronation of the British monarch to mark the high point of his reign, or that he reached the age of 30, the age at which Jesus Christ was baptised. Harold II was crowned on the day after the death of his predecessor, Edward the Confessor, the rush probably reflecting the contentious nature of Harold's succession; whereas the first Norman monarch, William I, was also crowned on the day he became king, 25 December 1066, but three weeks since the surrender of English nobles and bishops at Berkhampstead, allowing time to prepare a spectacular ceremony. Most of his successors were crowned within weeks, or even days,