Queen Elizabeth II, ruler of Great Britain and Northern Ireland, Head of the Commonwealth, died Thursday aged 96.

Her Royal Highness was placed on bedrest and medical supervision Thursday following concerns from her doctors over her health. She died Thursday after ruling the British Isles and Commonwealth for more than 70 years.

Queen Elizabeth is the longest ruling and greatest traveled monarch in British history, according to the official Royal website. Her full name is Elizabeth Alexandra Mary. She was born April 21, 1926, to the House of Windsor in London, England, to Prince Albert, Duke of York and Lady Elizabeth Bowes-Lyon.

She was crowned queen on February 6, 1952 after her uncle, Edward VIII, abdicated the throne to her father in 1936, according to Britannica. Shortly under five years prior, she married Lieutenant Philip Mountbatten of the Royal Navy, who was formerly Prince Philip of Greece and Denmark.