Siege of Toulouse
1217 CE.
Shown on the map at 43.605°, 1.443°.
Toulouse was besieged from 22 September 1217 to 25 July 1218 during the Albigensian Crusade. It was the third of a series of sieges of the city during the height of Crusader efforts to put down Catharism (and the local Languedocian nobility). It ended in the repulsion of the Crusaders and the death of their leader, Simon IV de Montfort.
Text from the Wikipedia article Siege of Toulouse (1217–1218), licensed CC BY-SA 4.0.