of England Magna Carta, which established that the king may not levy or collect any taxes (except the feudal taxes to which they were hitherto accustomed), save with the consent of a council. It was also established that the most important tenants-in-chief and ecclesiastics be summoned to the council by personal writs from the sovereign, and that all others be summoned to the council by general writs from the sheriffs of their counties. Modern government has its origins in the Curia Regis; parliament descends from the Great Council later known as the parliamentum established by Magna Carta. During the reign of King Henry III, 13th-Century English Parliaments incorporated elected representatives from shires and towns. These parliaments are, as such, considered forerunners of the modern parliament. In 1265, Simon de Montfort, then in rebellion against Henry III, summoned a parliament of his supporters without royal authorization. The archbishops, bishops, abbots, earls, and barons were summoned, as were two knights from each shire and two burgesses from each borough. Knights had been summoned to previous councils, but it was unprecedented for the boroughs to receive any representation. Come 1295, Edward I later adopted de Montfort's ideas for representation and election in the so-called "Model Parliament". At first, each estate debated independently; by the reign of Edward III, however, Parliament recognisably assumed its modern form, with authorities dividing the legislative body into two separate chambers. Parliament under Henry VIII and Edward VI The purpose and structure of Parliament in Tudor England underwent a significant transformation under the reign of Henry VIII. Originally its methods were primarily medieval, and the monarch still possessed a form of inarguable dominion over its decisions. According to Elton, it was Thomas Cromwell, 1st Earl of Essex, then chief minister to Henry VIII, who initiated still other changes within parliament. The Reformation Acts supplied Parliament with unlimited power over the country. This included authority over virtually every matter, whether social, economic, political, or religious ; it legalised the Reformation, officially and indisputably. The king had to rule through the council, not over it, and all sides needed to reach a mutual agreement when creating or passing laws, adjusting or implementing taxes, or changing religious doctrines. This was significant: the monarch no longer had sole control over the country. For instance, during the later years of Mary, Parliament exercised its authority in originally rejecting Mary's bid to revive Catholicism in