The Whigs were a political faction and then a political party in the parliaments of England, Scotland, Great Britain, Ireland and the United Kingdom. Between the 1680s and 1850s, they contested power with their rivals, the Tories. The Whigs' origin lay in constitutional monarchism and opposition to absolute monarchy. The Whigs played a central role in the Glorious Revolution of 1688 and were the standing enemies of the Stuart kings and pretenders, who were Roman Catholic. The Whigs took full control of the government in 1715 and remained totally dominant until King George III, coming to the throne in 1760, allowed Tories back in. The Whig Supremacy (1715–1760) was enabled by the Hanoverian succession of George I in 1714 and the failed Jacobite rising of 1715 by Tory rebels. The Whigs thoroughly purged the Tories from all major positions in government, the army, the Church of England, the legal profession and local offices. The Party's hold on power was so strong and durable, historians call the period from roughly 1714 to 1783 the age of the Whig Oligarchy. The first great leader of the Whigs was Robert Walpole, who maintained control of the government through the period 1721–1742 and whose protégé Henry Pelham led from 1743 to 1754.