Henry III and the Birth of Parliament

This episode explores the long and turbulent reign of Henry III, who came to the throne as a child after King John's death. Though deeply pious and a patron of Gothic architecture—most famously rebuilding Westminster Abbey—Henry's extravagance, poor governance, and reliance on foreign advisors alienated his nobles. Heavy taxation to fund failed foreign ventures drove widespread discontent. Rebellion broke out under Simon de Montfort, who in 1258 forced Henry to accept the Provisions of Oxford, limiting royal authority. During the Second Barons' War, de Montfort captured Henry and, in 1265, summoned a revolutionary Parliament that included not just nobles and clergy but also knights and townsmen—the first step toward true representation. Though de Montfort was killed at the Battle of Evesham and Henry restored, the idea of Parliament endured. By the end of Henry's 56-year reign, Magna Carta had been reaffirmed, Parliament was evolving into a permanent institution, and the principle that kings must govern with consent had taken root. His son Edward I would build on these foundations, pushing England further toward constitutional monarchy.