Royal
Records

British Monarchy Records

Longest/Highest/Most

Royal History Records

Longest Reigning Monarch

Queen Elizabeth II

69 years & counting

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Longevity of heir apparent

Charles, Prince of Wales

73 years & counting

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Oldest monarch at time of accession to the throne

William IV

64 years of age

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Length of marriage

Elizabeth II and Prince Philip

73  years

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Most children

Henry I