The House of Windsor is a British royal house, and currently the reigning house of the United Kingdom and the other Commonwealth realms. Since it was founded in 1917, there have been five British monarchs of the House of Windsor: George V, Edward VIII, George VI, Elizabeth II, and Charles III. The children and male-line descendants of Queen Elizabeth II and Prince Philip also genealogically belong to the House of Oldenburg since Philip was by birth a member of the Glücksburg branch of that house.