In the 1530s, Henry VIII, angered by the Pope Clement VII's refusal to annul his marriage to Catherine of Aragon, decided to break with the Church and set himself as ruler of the Church of England. The monarchs of Great Britain have retained ecclesiastical authority in the Church of England since Henry VIII, having the current title, "Supreme Governor of the Church of England". England's ecclesiastical intermixing did not spread widely, however, due to the extensive persecution of Catholics that resulted from Henry's power grab. This eventually led to Nonconformism, English Dissenters, and the anti-Catholicism of Oliver Cromwell, the Commonwealth of England, and the Penal Laws against Catholics and others who did not adhere to the Church of England.