Four Gothic Kings edited by Elizabeth Hallam said:No Plantagent King came to the throne in more difficult circumstances then Henry II, son of King John. In 1216, he was just over nine years old. Louis, sone of Philip II, king of France, controlled the whole of Eastern London, including London, and was recognized as king by the majority of English barons. It seemed that the Plantagent dynasty was about to swept away by the Capetian.
Four Gothic Kings gives credit for the Plantagenet's victory to William Marshall, earl of Pembroke, and to the Papal Legate Gaulo, who within a year had beaten Louis.
Lets say however Louis manges to keep the loyalty of the English Barons, and five years later becomes both the king of England, and king of France.
Short term results? Long term?