She died peacefully on. elizabeth ii children. Princess Elizabeth was just 13 years old when war broke out on September 3, Like many children living in London, Elizabeth and her. . Elizabeth II was Queen of the United Kingdom and other Commonwealth realms from 6 February until her death in She was queen regnant of Elizabeth Angela Marguerite Bowes-Lyon (4 August – 30 March ) was Queen of the United Kingdom and the Dominions of the British Commonwealth from Queen Elizabeth II, the UK's longest-serving monarch, has died at Balmoral aged 96, after reigning for 70 years. Then-Princess Elizabeth (played by Viola Prettejohn) and Princess Margaret (Beau Gadsdon) leave Buckingham Palace to go celebrate the end of.