Prince Philip, Duke of Edinburgh (born Prince Philip of Greece and Denmark, later Philip Mountbatten; 10 June 1921 – 9 April 2021), was the husband of Queen Elizabeth II and served as consort of the British monarch from her accession on 6 February 1952 until his death in 2021, making him the longest-serving royal consort in British history. Philip was born in Greece into the Greek and Danish royal families. His family was exiled from the country when he was 18 months old. Educated in France, Germany, and the United Kingdom, he joined the Royal Navy in 1939 at the age of 18. In July 1939, he began corresponding with Princess Elizabeth, then aged 13, the elder daughter and heir presumptive of King George VI. During the Second World War, Philip served with distinction in the Mediterranean and Pacific fleets of the Royal Navy. In the summer of 1946, King George VI granted Philip permission to marry Elizabeth, who was then 20. Prior to the official announcement of their engagement in July 1947, Philip renounced his Greek and Danish royal titles and styles, became a naturalised British subject, and adopted the surname Mountbatten from his maternal grandparents. In November 1947, he married Elizabeth, was granted the style "His Royal Highness", and was created Duke of Edinburgh, Earl of Merioneth, and Baron Greenwich. They had four children: Charles, Anne, Andrew, and Edward. Following Elizabeth's accession to the throne in 1952, Philip left active naval service, having attained the rank of commander. In 1957, he was formally created a British prince. A keen sportsman, Philip played a significant role in the development of the equestrian discipline of carriage driving. He served as patron, president, or member of more than 780 organisations, including the World Wide Fund for Nature, and was chairman of The Duke of Edinburgh's Award, an international youth awards programme for people aged 14 to 24. Philip was the longest-lived male member of the British royal family. He retired from public duties in 2017 at the age of 96, having completed 22,219 solo engagements and delivered 5,493 speeches since 1952. He died at Windsor Castle in 2021, aged 99.