Based on Henry VIII's desire for an annulment of his marriage (first requested of Pope Clement VII in 1527), the English Reformation was at the outset more of a political affair than a theological dispute. The reality of political differences between Rome and England allowed growing theological disputes to come to the fore. Until the break with Rome, it was the Pope and general councils of the Church that decided doctrine. Church law was governed by canon law with final jurisdiction in Rome. Church taxes were paid straight to Rome, and the Pope had the final word in the appointment of bishops.
The break with Rome was effected by a series of acts of Parliament passed between 1532 and 1534, among them the 1534 Act of Supremacy, which declared that Henry was the "Supreme Head on earth of the Church of England". (This title was renounced by Mary I in 1553 in the process of restoring papal jurisdiction; when Elizabeth I reasserted the royal supremacy in 1559, her title was Supreme Governor.) Final authority in doctrinal and legal disputes now rested with the monarch, and the papacy was deprived of revenue and the final say on the appointment of bishops.
The theology and liturgy of the Church of England became markedly Protestant during the reign of Henry's son Edward VI largely along lines laid down by Archbishop Thomas Cranmer. Under Mary, the whole process was reversed and the Church of England was again placed under papal jurisdiction. Soon after, Elizabeth reintroduced the Protestant faith but in a more moderate manner. The structure and theology of the church was a matter of fierce dispute for generations.
The violent aspect of these disputes, manifested in the English Civil Wars, ended when the last Roman Catholic monarch, James II, was deposed, and Parliament asked William III and Mary II to rule jointly in conjunction with the English Bill of Rights in 1688 (in the "Glorious Revolution"), from which emerged a church polity with an established church and a number of non-conformist churches whose members at first suffered various civil disabilities that were removed over time. The legacy of the past Roman Catholic Establishment remained an issue for some time, and still exists today. A substantial minority remained Roman Catholic in England, and in an effort to disestablish it from British systems, their church organisation remained illegal until the 19th century.
Henry VIII ascended the English throne in 1509 at the age of 17. He made a dynastic marriage with Catherine of Aragon, widow of his brother Arthur, in June 1509, just before his coronation on Midsummer's Day. Unlike his father, who was secretive and conservative, the young Henry appeared the epitome of chivalry and sociability. An observant Roman Catholic, he heard up to five masses a day (except during the hunting season); of "powerful but unoriginal mind", he let himself be influenced by his advisors from whom he was never apart, by night or day. He was thus susceptible to whoever had his ear.