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
Isabella of Aragon, Queen of Portugal Manuel later married Isabella's younger sister, Maria of Aragon, who bore him his son and heir, John III. Portugal and Spain were finally united between 1580 and 1640, after Philip II of Spain, Isabella's great-nephew via her sisters, Maria and Joanna, successfully claimed the throne of Portugal as a son of Isabella of Portugal, the daughter of Maria and Manuel. Isabella of Aragon, Queen of Portugal Isabella, Princess of Asturias (2 October 1470 – 23 August 1498) was a Queen consort of Portugal and heir presumptive of King Ferdinand II of Aragon and Queen Isabella I of Castile, as their