Queen - Elizabeth II (Elizabeth Alexandra Mary Windsor; born 21 April 1926) is Queen of 16 sovereign states, holding each crown and title equally. However, she is more directly involved with the United Kingdom, where the Royal Family resides, and the Monarchy is historically indigenous. Apart from the United Kingdom, Elizabeth II is also Queen of Canada, Australia, New Zealand, Jamaica, Barbados, the Bahamas, Grenada, Papua New Guinea, the Solomon Islands, Tuvalu, Saint Lucia, Saint Vincent and the Grenadines, Antigua and Barbuda, Belize, and Saint Kitts and Nevis, where she is represented by Governors-General. The 16 countries of which she is queen are known as Commonwealth Realms, and their combined population is 128 million. She is presently the world's only monarch who is simultaneously Head of State of more than one independent nation. In legal theory she is the most powerful head of state in the world, although in practice she personally exercises very little political executive power. Elizabeth became Queen of the United Kingdom, Canada, Australia, New Zealand, South Africa, Pakistan and Ceylon upon the death of her father, George VI, on 6 February 1952. As other colonies of the British Empire (now the Commonwealth of Nations) attained independence from the UK during her reign, she acceded to the newly created thrones as Queen of each respective realm so that throughout her 54 years on the throne she has been Monarch of 32 nations, half of which either moved to different royal houses, or became republics. See also: Former Commonwealth Realms Elizabeth also holds the positions of Head of the Commonwealth, Lord High Admiral, Supreme Governor of the Church of England (styled Defender of the Faith) and Lord of Mann. Following tradition, she is also styled Duke of Lancaster and Duke of Normandy. She is also Commander-in-Chief of the Armed forces of many of her Realms. Elizabeth is currently the second-longest-reigning head of state in the world and the fifth-longest serving British monarch. Her reign of over half a century has seen ten different Prime Ministers of the United Kingdom and numerous Prime Ministers in the Commonwealth Realms of which she is (or was) also Head of State; between them she has had a total of 138 Prime Ministers during her reign. Elizabeth was born at 17 Bruton Street, in Mayfair, London, on 21 April 1926.[1] Her father was Prince Albert, Duke of York (the future George VI), the second eldest son of George V and Queen Mary. Her mother was The Duchess of York (née Lady Elizabeth Bowes-Lyon, later Queen Elizabeth, and, after her daughter's accession to the throne, the Queen Mother), the daughter of Claude George Bowes-Lyon, 14th Earl of Strathmore and Kinghorne and his wife, Nina Cecilia Cavendish-Bentinck, the Countess of Strathmore and Kinghorne. She was baptised in the Music Room of Buckingham Palace by Cosmo Lang, the Archbishop of York. Her godparents were King George and Queen Mary, the Princess Royal, the Duke of Connaught, the Earl of Strathmore and Lady Elphinstone. Elizabeth was named after her mother, while her two middle names are those of her paternal great-grandmother, Queen Alexandra, and grandmother, Queen Mary, respectively. As a child her close family knew her as 'Lilibet'. Her grandmother Queen Mary doted on her and George V found her very entertaining. At 10 years old, the young Princess was introduced to a preacher at Glamis Castle. As he left, he promised to send her a book. Elizabeth replied, 'Not about God. I already know all about Him'. As a granddaughter of the British sovereign in the male line, she held the title of a British princess with the style Her Royal Highness. Her full style was Her Royal Highness Princess Elizabeth of York. At the time of her birth, she was third in the line of succession to the crown, behind her father and her uncle, the Prince of Wales. Although her birth generated public interest, there was no reason at the time to believe that she would ever become queen, as it was widely assumed that her uncle, the Prince of Wales, would marry and have children in due course. However, due to his wife Wallis Simpson's reproductive issues, Edward was destined not to have any legitimate heirs. Since Elizabeth's parents had no sons, who would have had precedence over her regardless of when they were born, she would eventually have become queen whether Edward had abdicated or not, assuming she outlived her father