History
1236
General
Population: 412 Million*
- Medicine: Theodoric of Luca pioneers anesthesias
- Religion: Pope Gregory IX excommunicates Frederick II
- Deaths: Bavarian minnesinger Neidhardt von Reuenthal
Europe
- Bulgaria: End of independence of Volga Bulgaria
- England: Henry marries Eleanor of Provence
- Russia: Alexander Nevski named Grand Duke of Novgorod to 1263
- Spain: Arabs lose Cordoba to Castile