Siege of Castelnòu d'Arri
1211 CE.
Shown on the map at 43.317°, 1.950°.
The siege of Castelnaudary was a military engagement which took place in September 1211 during the Albigensian Crusade. It took place in the Occitania region of southern France against the town of Castelnaudary. The siege was led by Raymond VI, Count of Toulouse against Simon de Montfort. After less than a month, the southern army lifted the siege.
Text from the Wikipedia article Siege of Castelnaudary, licensed CC BY-SA 4.0.