Elizabeth II has been the queen of England since February 6, 1952, making her the longest reigning monarch in British history. She was born in London as the eldest child of the Duke and Duchess of York, later King George VI and Queen Elizabeth, and educated privately at home. Her father acceded to the throne upon the abdication of his brother Edward VIII in 1936, from which time she was the heir presumptive. She began to undertake public duties during the Second World War, serving in the Auxiliary Territorial Service. In 1947, she married Philip, Duke of Edinburgh. Together they have four children: Charles, Prince of Wales; Anne, Princess Royal; Prince Andrew, Duke of York; and Prince Edward, Earl of Wessex.