Across the channel the Lusignans were causing problems still angry over John's marriage to Isabella. John ordered that an army should assemble at Portsmouth and both he and his wife went to Normandy. The next year the Lusignans attacked the castle of Mirabeau where John's mother, Eleanor of Aquitaine, was living. In response and quite out of character,John launched a rescue mission. His army succeeded in defeating the attackers and Prince Arthur of Brittany, who was supporting the Lusignans, was captured.
Back in England Isabella gave birth to a son, the future King Henry III and several other children. When the barons of England rose up against her husband Isabella was at Gloucester and upon John's death she was quick to ensure Henry was crowned King of England at Gloucester Cathedral. Shortly after this she returned to Hugh of Lusignan and became his wife.