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 The Oath of Supremacy was originally imposed by King Henry VIII of England through the Act of Supremacy 1534, but repealed by his daughter, Queen Mary I of England and reinstated under Mary's half-sister, Queen Elizabeth I of England under the Act of Supremacy 1559.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 Head of the Church of England Supreme Head of the Church of England The Supreme Head of the Church of England was a title created in 1531 for King Henry VIII of England, who was responsible for the foundation of the English Protestant church that broke away from the authority of the Roman Catholic Church after Pope Paul III excommunicated Henry in 1538 over his divorce from Catherine of Aragon. The Act of Supremacy of 1534 confirmed the King's status as having supremacy over the church and required the nobility to swear an oath recognising Henry's supremacy. By 1536, Henry had broken with Rome, seized the