This monarch was cornered by his barons at Runnymede, where he succumbed to their demands.
Prior to becoming king, this man displaced William Longchamp, the Bishop of Ely who had been appointed the king's justiciar. His forces were overcome at the Battle of Bouvines and the siege of Rouen, and he lost Normandy and many other territories to Phillip II Augustus. He was excommunicated and his kingdom placed under papal interdict after he opposed Stephen Langton, Innocent III's choice for Archbishop of Canterbury. This monarch was cornered by his barons at Runnymede, where he succumbed to their demands. For 10 points, name this King of England who signed the Magna Carta, the successor to Richard the Lion-hearted.
Prior to becoming king, this man displaced William Longchamp, the Bishop of Ely who had been appointed the king's justiciar.
King {John} of England [or {John Lackland}, or {John Soft}-{Sword}]