Duke of Clarence and St Andrews was a title created in 1789 in the Peerage of Great Britain for Prince William Henry (later King William IV). He was also created Earl of Munster in the Peerage of Ireland at the same time.
While there had been several creations of Dukes of Clarence (and there was later a Duke of Clarence and Avondale), the only creation of a Duke of Clarence and St Andrews was for Prince William, third son of King George III. When William succeeded his elder brother George IV to the throne in 1830, the dukedom merged in the crown. The title refers to ancient castle and honour of Clare, Suffolk; and the Scottish city of St Andrews.Polydore Vergil, in his Anglica Historia of 1534 (Book XIX.36) dates the Dukedom to 1361 and claims to have rediscovered the lost origins of the name. See also David Hatton, Clare, Suffolk, an account of historical features of the town, its Priory and its Parish Church, 2006, Book 1, p21 It is also available online on the Clare website. See also the Oxford Dictionary of National Biography s.v. 'Lionel [Lionel of Antwerp], duke of Clarence': "Lionel's elevation to the title of duke of Clarence (meaning the town, castle, and honour of Clare)".
Duke of Clarence and St Andrews (1789) See also Earl of Munster (1789)
| Prince William HenryHouse of Hanover1789–1830 | | 21 August 1765Buckingham House, Londonson of George III and Charlotte of Mecklenburg-Strelitz | Adelaide of Saxe-Meiningen11 July 1818 | 20 June 1837Windsor Castle, Windsoraged 71 |- | colspan=5|Prince William Henry ascended as William IV in 1830 upon his brother's death; and his hereditary titles merged in the Crown. As William had no male issue, the title would have gone extinct in any case, even if he had not become king.
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