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 The Oath of Supremacy was originally imposed by King Henry VIII of England through the Act of Supremacy 1534, but repealed by his daughter, Queen Mary I of England and reinstated under Mary's half-sister, Queen Elizabeth I of England under the Act of Supremacy 1559.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
Elizabeth I of England Act of Supremacy became law on 8 May 1559. All public officials were to swear an oath of loyalty to the monarch as the supreme governor or risk disqualification from office; the heresy laws were repealed, to avoid a repeat of the persecution of dissenters practised by Mary. At the same time, a new Act of Uniformity was passed, which made attendance at church and the use of an adapted version of the 1552 Book of Common Prayer compulsory, though the penalties for recusancy, or failure to attend and conform, were not extreme. From the start of Elizabeth's reign, it