Edward I of England
Edward reformed English Parliament and made it a source for generating revenue. Edward held Parliament regularly in his reign. In 1295 a significant change occurred. For this Parliament, in addition to the  lords, two knights from each county and two representatives from each borough were summoned. Before, the commons had been expected simply to assent (say 'yes') to decisions already made by the rulers. Now they would meet with the full authority (plena potestas) of their communities, to give assent to decisions made in Parliament. The king now had full backing for collecting 'lay subsidies' from the entire population. Lay subsidies were taxes collected at a certain fraction of the moveable property of all laymen. Historians have called this the "Model Parliament".