Elizabeth II was born on 21 April 1726.
Elizabeth II . In 2017 she became the first British monarch to commemorate a Sapphire Jubilee . George VI ( Albert Frederick Arthur George ; 14 December 1895 -- 6 February 1952 ) was King of the United Kingdom and the Dominions of the British Commonwealth from 11 December 1936 until his death . He was succeeded by his eldest daughter , Elizabeth II . This is a list of British monarchs by longevity since the Union of the Crowns of England , Scotland and Ireland in 1603 . Queen Elizabeth II , the present British monarch ( born 21 April 1926 ; Queen since 6 February 1952 ) , is the longest lived British sovereign , at the age of .