In England, the Reformation followed a different course from elsewhere in Europe. There had long been a strong strain of anti-clericalism, and England had already given rise to the Lollard movement of John Wycliffe, which played an important part in inspiring the Hussites in Bohemia. Lollardy was suppressed and became an underground movement so the extent of its influence in the 1520s is difficult to assess. The different character of the English Reformation came rather from the fact that it was driven initially by the political necessities of Henry VIII. Henry had once been a sincere Roman Catholic and had even authored a book strongly criticizing Luther, but he later found it expedient and profitable to break with the Papacy. His wife, Catherine of Aragon, bore him only a single child, Mary. As England had recently gone through a lengthy dynastic conflict ("see Wars of the Roses"), Henry feared that his lack of a male heir might jeopardize his descendants' claim to the throne. However, Pope Clement VII, concentrating more on Charles V's "sack of Rome", denied his request for an annulment. Had Clement granted the annulment and therefore admitted that his predecessor, Julius II, had erred, Clement would have given support to the Lutheran assertion that Popes replaced their own judgement for the will of God. King Henry decided to remove the Church of England from the authority of Rome. In 1534, the Act of Supremacy made Henry the Supreme Head of the Church of England. Between 1535 and 1540, under Thomas Cromwell, the policy known as the Dissolution of the Monasteries was put into effect. The veneration of some saints, certain pilgrimages and some pilgrim shrines were also attacked. Huge amounts of church land and property passed into the hands of the crown and ultimately into those of the nobility and gentry. The vested interest thus created made for a powerful force in support of the dissolutions.