for future rulers, and cannot be sold by the monarch. Sandringham House in Norfolk and Balmoral Castle in Aberdeenshire are privately owned by the royal family. Style The present sovereign's full style and title is "Charles the third, by the Grace of God, of the United Kingdom of Great Britain and Northern Ireland and of His other Realms and Territories King, Head of the Commonwealth, Defender of the Faith". The title "Head of the Commonwealth" is held by the king personally, and is not vested in the British Crown. Pope Leo X first granted the title "Defender of the Faith" to King Henry VIII in 1521, rewarding him for his support of the Papacy during the early years of the Protestant Reformation, particularly for his book the Defence of the Seven Sacraments. After Henry broke from the Roman Church, Pope Paul III revoked the grant, but Parliament passed a law authorising its continued use. The sovereign is known as "His Majesty" or "Her Majesty". The form "Britannic Majesty" appears in international treaties and on passports to differentiate the British monarch from foreign rulers. The monarch chooses his or her regnal name, not necessarily his or her first name – George VI, Edward VII and Victoria did not use their first names. If only one monarch has used a particular name, no ordinal is used; for example, Queen Victoria is not known as "Victoria I", and ordinals are not used for English monarchs who reigned before the Norman conquest of England. The question of whether numbering for British monarchs is based on previous English or Scottish monarchs was raised in 1953 when Scottish nationalists challenged the Queen's use of "Elizabeth II", on the grounds that there had never been an "Elizabeth I" in Scotland. In MacCormick v Lord Advocate, the Scottish Court of Session ruled against the plaintiffs, finding that the Queen's title was a matter of her own choice and prerogative. The Home Secretary told the House of Commons that monarchs since the Acts of Union had consistently used the higher of the English and Scottish ordinals, which in the applicable four cases has been the English ordinal. The prime minister confirmed this practice but noted that "neither The Queen nor her advisers could seek to bind their successors". Future monarchs will apply this policy. Arms The royal coat of arms of the United Kingdom is "Quarterly, I and IV