Oath of Supremacy 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 The Oath of Supremacy was originally imposed by King Henry VIII of England through the Act of Supremacy 1534, but repealed by his daughter, Queen Mary I of England and reinstated under Mary's half-sister, Queen Elizabeth I of England under the Act of Supremacy 1559. The Oath was later extended to include Members of Parliament and people studying at
Supreme Governor of the Church of England the reign of Edward VI. This royal role is acknowledged in the "Preface to the Thirty-Nine Articles" of 1562. It states that: "Being by God's Ordinance, according to Our just Title, Defender of the Faith and Supreme Governor of the Church, within these Our Dominions, We hold it most agreeable to this Our Kingly Office, and Our own religious zeal, to conserve and maintain the Church committed to Our Charge, in Unity of true Religion, and in the Bond of Peace ... We have therefore, upon mature Deliberation, and with the Advice of so many of Our Bishops as might