Oath of Supremacy

Oath of allegiance to the monarch as Supreme Governor of the Church of England

The Oath of Supremacy required any person taking public or church office in the Kingdom of England, or in its subordinate Kingdom of Ireland, to swear allegiance to the monarch as Supreme Governor of the Church. 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 The Oath of Supremacy was originally imposed by King Henry VIII of England through the Act of Supremacy 1534, but repealed by his elder daughter, Queen Mary I of England, and reinstated under Henry's other daughter and Mary's half-sister, Queen Elizabeth I of England, under the Act of Supremacy 1558. The Oath was later extended to include Members of Parliament (MPs) and people studying at universities. In 1537, the Irish Supremacy Act was passed by the Parliament of Ireland, establishing Henry VIII as the supreme head of the Church of Ireland. As in England, a commensurate Oath of Supremacy was required for admission to offices.

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