Queen Elizabeth II - the sixth queen regnant and 63rd sovereign of Britain. She can trace her ancestry beyond the Hanoverians, Stuarts, Tudors, Plantagenets and Normans, back to the Saxon kings of the Dark Ages. Her long reign has seen astonishing social changes in Britain and the world. Elizabeth's accession heralded a post-war era of golden promise, but the new Elizabethan age did not quite materialize. Britain moved slowly from wartime ration books to the austerity of the early Cold War years. Then the swinging 60's brought prosperity and new liberal attitudes epitomized by the pop music of the times. It was also the decade when the Queen and Prince Philip completed their family. Prince Charles and Princess Anne - born before the accession - were joined by Prince Andrew in 1960 and Prince Edward in 1964. Princess Margaret married in 1960 and had two children, David and Sarah. The Royal Family looked happy and secure - so much so that they agreed to take part in a ground-breaking television documentary in 1969. Throughout the personal turbulence of her reign, the Queen has remained faultless in her public duties at home and abroad. As constitutional monarch, she has advised twelve Prime Ministers, from Churchill to Cameron. As head of state, she has traveled widely at the request of the British government of the day. Around a third of her overseas visits have been to the Commonwealth. She is Queen in sixteen countries as well as being Head of the Commonwealth, a free association of 53 countries. After the storms of the 1990's and the loss of her mother and sister ten years ago, the Queen will end her reign in happier times. Her grandchildren bring a promise of a restored future for the monarchy, celebrated by the events of the Diamond Jubilee.