Elizabeth II was Queen of the United Kingdom of Great Britain and Northern Ireland and the other Commonwealth realms from 6 February 1952 to 8 September 2022.
Eldest daughter of the Duke of York, who later became King George VI, and his wife Elizabeth, first Duchess of York and then Queen Consort, she became heir to the throne in 1936, the year of her uncle Edward's abdication VIII. After serving in the Auxiliary Territorial Service during the Second World War, in 1947 she married Prince Philip Mountbatten, with whom she had four children: Charles III, her successor, Anne, Princess Royal, Andrew, Duke of York, and Edward, Duke of Edinburgh.
She ascended the throne as Queen upon the death of her father on 6 February 1952, when she was twenty-five, being crowned on 2 June 1953 at Westminster Abbey. During her reign, she witnessed major changes including the devolution of power to the United Kingdom, the repatriation of the Canadian Constitution and decolonization in Africa with the strengthening of the Commonwealth of Nations of which she was Head.
Her reign, which lasted 70 years and 214 days, was the longest in British history, having surpassed on 9 September 2015 the previous record held by her great-great-grandmother Victoria, and the second longest in history among those historically established, behind only reign of the Sun King, Louis XIV of France. However, she was the longest-reigning ruler of her own, as Anne of Austria held an eight-year regency because Louis was only four years old when he ascended the throne, and he lived twenty years younger than Elizabeth.
Elizabeth II passed away at the Scottish estate of Balmoral on Thursday 8 September 2022.