History of the Constitution of the United Kingdom out of such gains. The revolt remains as an important moment in history, but it failed to contribute to the written body of the constitution. The first Act of Supremacy (1534) made King Henry VIII the "supreme head" of the Church of England. Henry VIII died in 1547, leaving three children as potential heirs. The second Act of Supremacy (1559) restored these powers over the church to Elizabeth I, reversing normalising legislation passed during the reign of her sister Mary I, although the title Elizabeth gained was "Supreme Governor of the Church of England" rather than "supreme head", so as
Oath of Supremacy counsellors, Sir Stephen Rice and Justin McCarthy, Viscount Mountcashel. The centrality of the Oath was re-established under the reign of William III and Mary II. Oath of Supremacy The Oath of Supremacy required any person taking public or church office in England to swear allegiance to the monarch as Supreme Governor of the Church of England. Failure to do so was to be treated as treasonable. The Oath of Supremacy was originally imposed by King Henry VIII of England through the Act of Supremacy 1534, but repealed by his daughter, Queen Mary I of England and reinstated under Mary's half-sister,