. She died peacefully on. Then-Princess Elizabeth (played by Viola Prettejohn) and Princess Margaret (Beau Gadsdon) leave Buckingham Palace to go celebrate the end of. 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.