Key Events in England, 1223: William Marshal's Death, Henry III's Coronation, Civil War
- Death of William Marshal (May 14) – Greatest knight of his era, served multiple kings.
- Henry III's Coronation (May 28, Gloucester Cathedral) – Age 9; reign marked by conflict.
- Civil War – Nobles rebelled against regent Hubert de Burgh's rule.
- Falkes de Bréauté's Rebellion – Mercenary challenged crown; fortified Bedford Castle.
- Siege of Bedford Castle – Royal forces captured Falkes (imprisoned 1224).
- Richard, Earl of Cornwall Returns – From Fifth Crusade; added political weight.
- Treaty of Paris (Sept 1223) – Restored lands to England, recognized Henry III.
These events set stage for ongoing instability under Henry III.