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 The Oath of Supremacy was originally imposed by King Henry VIII of England through the Act of Supremacy 1534, but repealed by his daughter, Queen Mary I of England and reinstated under Mary's half-sister, Queen Elizabeth I of England under the Act of Supremacy 1559.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
Constitution of the United Kingdom by Parliament, but only for misconduct. Judges may not sit or vote in either House of Parliament (before the 2005 Act, they had been permitted to sit and vote in the House of Lords). The Church of England is the established church in England (i.e. not in Scotland, Wales or Northern Ireland). The monarch is "ex officio" Supreme Governor of the Church of England, and is required by the Act of Settlement 1701 to "join in communion with the Church of England". As part of the coronation ceremony, the monarch swears an oath to "maintain and preserve inviolably the settlement