Earl of Merioneth

Earl of Merioneth was a title in the Peerage of the United Kingdom created in 1947 along with the Duke of Edinburgh and the Baron Greenwich for Philip Mountbatten, later Prince Philip, upon his marriage to Princess Elizabeth, later Queen Elizabeth II.

Merionethshire is one of thirteen historic counties of Wales, a vice county and a former administrative county.

Earls of Merioneth (1947)
Camilla Parker Bowles 9 April 2005
 * Prince Philip Mountbatten 1947–2021 also: Duke of Edinburgh and Baron Greenwich (1947)
 * Duke of Edinburgh 33 Allan Warren.jpg
 * 10 June 1921 Mon Repos, Corfu son of Prince Andrew of Greece and Denmark and Princess Alice of Battenberg
 * Princess Elizabeth 20 November 1947 4 children
 * 9 April 2021 Windsor Castle, Windsor aged 99
 * Prince Charles House of Windsor 2021–2022 also: Prince of Wales and Earl of Chester (1958), Duke of Cornwall, Duke of Rothesay (1952), Duke of Edinburgh and Baron Greenwich (2021)
 * King Charles III (July 2023).jpg
 * 14 November 1948 Buckingham Palace, London son of Prince Philip and Queen Elizabeth II
 * Lady Diana Spencer 29 July 1981 – 28 August 1996 2 children
 * Lady Diana Spencer 29 July 1981 – 28 August 1996 2 children
 * – now 75 years, 246 days old
 * colspan=5|Prince Charles succeeded as Charles III in 2022 upon his mother's death, and his hereditary titles merged in the Crown.
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