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
John, King of England necessary papal permission to marry Isabel in the first place – as a cousin, John could not have legally wed her without this. It remains unclear why John chose to marry Isabella of Angoulême. Contemporary chroniclers argued that John had fallen deeply in love with Isabella, and John may have been motivated by desire for an apparently beautiful, if rather young, girl. On the other hand, the Angoumois lands that came with Isabella were strategically vital to John: by marrying Isabella, John was acquiring a key land route between Poitou and Gascony, which significantly strengthened his grip on Aquitaine. Isabella,