Supreme Governor of the Church of England Church's assets in England and declared the Church of England as the established church with himself as its head. The Act of Supremacy 1534 confirmed the King's status as having supremacy over the church and required the peers to swear an oath recognising Henry's supremacy. Henry's daughter, Mary I, attempted to restore the English Church's allegiance to the Pope and repealed the Act of Supremacy in 1555. Elizabeth I ascended to the throne in 1558 and the next year Parliament passed the Act of Supremacy 1558 that restored the original act. To placate critics, the Oath of Supremacy which peers
Catholic Church in England and Wales prelate, or other authority, and was aimed at abolishing the authority of the Pope in England. A third offence was high treason, punishable by death. The Oath of Supremacy, imposed by the Act of Supremacy 1558, provided for 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 so swear was a crime, although it did not become treason until 1562, when the Supremacy of the Crown Act 1562 made a second offence of refusing to take the oath treason. During the first years of