Henry the Young King fought a short war with his brother Richard in 1183 over the status of England, Normandy and Aquitaine.  Henry II moved in support of Richard, and Henry the Young King died from dysentery at the end of the campaign.  With his primary heir dead, Henry rearranged the plans for the succession: Richard was to be made King of England, albeit without any actual power until the death of his father; Geoffrey would retain Brittany; and John would now become the Duke of Aquitaine in place of Richard.  Richard refused to give up Aquitaine;  Henry II was furious and ordered John, with help from Geoffrey, to march south and retake the duchy by force.  The two attacked the capital of Poitiers, and Richard responded by attacking Brittany.  The war ended in stalemate and a tense family reconciliation in England at the end of 1184. 
Since the truce had been arranged with Dover, the Dover garrison had repeatedly disrupted Louis's communication with France, and so Louis sailed back to Dover to begin a second siege. The French camp set up outside Dover Castle in anticipation of the new siege was attacked and burned by William of Cassingham just as the fleet carrying the reinforcements arrived. Louis was forced to land at Sandwich and march to Dover, where he began a second siege in earnest on 12 May 1217. This new siege diverted so much of Louis's forces that Marshal and Falkes de Breauté were able to attack and heavily defeat pro-Louis barons at Lincoln Castle on 15 May or 20 May 1217, in what became known as the Second Battle of Lincoln .