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 of Ibelin, the Old Lord of Beirut of Arsuf, making him one of the wealthiest nobles in the kingdom. From 1205 to 1210 John served as regent in Acre, the new capital of the Kingdom of Jerusalem, for Maria of Montferrat, Queen Isabella I's daughter. As regent, John helped arrange the marriage of Amalric II’s son Hugh I of Cyprus to Alice of Champagne, daughter of Amalric’s predecessor as King of Jerusalem, Henry II of Champagne. In 1210 he also helped arrange Maria of Montferrat’s marriage to John of Brienne, who was suggested by king Philip II of France. By 1217 John and his brother Philip of