John, King of England succession. Henry the Young King had been crowned King of England in 1170, but was not given any formal powers by his father; he was also promised Normandy and Anjou as part of his future inheritance. Richard was to be appointed the Count of Poitou with control of Aquitaine, whilst Geoffrey was to become the Duke of Brittany. At this time it seemed unlikely that John would ever inherit substantial lands, and he was jokingly nicknamed "Lackland" by his father. Henry II wanted to secure the southern borders of Aquitaine and decided to betroth his youngest son to Alais, the
Battle of Lincoln (1217) to Louis so Henry's forces sacked the city. In 1216, during the First Barons' War over the English succession, Prince Louis of France entered London and proclaimed himself King of England. Louis was supported by various English barons who resisted the rule of King John. John died in the middle of the war, and his nine-year-old son Henry III was crowned by the English. Once John died, many barons were willing to change sides and fight for Henry against Prince Louis' claim. William Marshal, 1st Earl of Pembroke, a knight of great skill and prowess, served as regent for Henry.