John, King of England treatment of many of England's most powerful nobles. Although both John and the barons agreed to the " peace treaty in 1215, neither side complied with its conditions. Civil war broke out shortly afterwards, with the barons aided by Louis of France. It soon descended into a stalemate. John died of dysentery contracted whilst on campaign in eastern England during late 1216; supporters of his son Henry III went on to achieve victory over Louis and the rebel barons the following year. Contemporary chroniclers were mostly critical of John's performance as king, and his reign has since been the subject
Richard I of England in June 1183 when the Young King died. With the death of Henry the Young King, Richard became the eldest surviving son and therefore heir to the English crown. King Henry demanded that Richard give up Aquitaine (which he planned to give to his youngest son John as his inheritance). Richard refused, and conflict continued between them. Henry II soon gave John permission to invade Aquitaine. To strengthen his position, in 1187, Richard allied himself with 22-year-old Philip II, the son of Eleanor's ex-husband Louis VII by Adele of Champagne. Roger of Howden wrote: The King of England was struck