| Year | Day/Month | Title |
| John (1199 - 1216) |
|
1215 | Oct |  Baron's war
|
| | After the Magna Carta was annulled and it was clear that John was not going to agree to the terms of the charter the civil war between King John and the rebel barons started. The barons offered the English crown to Prince Louis, the son of King Philippe II of France and invited him to invade England. John confiscated the rebel barons' lands and gave them to his own supporters. King John besieged Rochester Castle where a garrison of men had been left by the barons. The garrison was starved out and the castle fell to the King. |
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|
| Henry III (1216 - 1272) |
|
1216 | Feb | Small French fleet land in London
|
| | A small French army landed in London. Their commander informed the rebel barons that Prince Louis would soon arrive from France. |
|
| May 21 | Prince Louis of France claims English Throne
|
| | Invited by the barons opposed to king John, Prince Louis of France landed in England to claim the English Throne. Louis captured Rochester Castle after a short siege. |
|
| Jun | Prince Louis advances across England
|
| | Prince Louis advanced on Winchester and captured the city and its castle. Elsewhere, Windsor Castle and Dover Castle were besieged by the rebel barons. Both castles were defended and held out against the sieges. King John used Corfe Castle in the south-west as his base of operations while he planned his campaign against the rebel barons and Prince Louis. |
|
| Sep | William of Cassingham
|
| | A man called William of Cassingham, possibly known as Willekin of the Weald, supported King John against the invaders and attacked the rebel barons and French in whatever means he could using a form of guerrilla warfare. |
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1217 | | Porchester castle captured
|
| | Prince Louis captured and almost destroyed the castle at Porchester. |
|
| Apr | Siege of Mountsorrel Castle
|
| | Royalists besieged the French controlled Mountsorrel Castle in Lincolnshire. When Louis sent reinforcements to assist those in the castle the royalists moved away to Nottingham. The French army then made the mistake of moving on to Lincoln where the royalists had held out against previous attacks. |
|
| May 20 | Battle of Lincoln
|
| | Henry III's supporters defeated the forces belonging to Prince Louis and the rebel barons that were besieging the castle at Lincoln. |
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|
1223 | | Louis VIII becomes King of France
|
| | Louis VIII became king of France, upon the death of his father Philippe Augustus. |
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|
1226 | | Louis IX becomes King of France
|
| | At twelve years old, upon the death of his father, Louis IX became king of France. |
