1234

Events 
 February 9 — Song Dynasty Chinese and Mongolian armies occupied the Jurchen capital at Caizhou, marking the collapse of the Jin Dynasty (1115-1234).
 Supposedly Mali begins revolt against oppressors.
 Canonization of Saint Dominic
 Pope Gregory IX called for a Crusade against Bosnia and replaced the Bogumil Bosnian Bishop with a Catholic Dominican German Johann
 Pope Gregory IX released the Nova Compilatio Decretalium
 King Andrew II of Hungary proclaimed herzeg Coloman as Ban of Bosnia, who passed it on to Prijezda, a cousin of Ban Matej Ninoslav (1234 to 1239) despite Matej being the legitimate Ban of Bosnia

 Births 
 Abaqa Khan, Mongol emperor of Persia (died 1282)

 Deaths 
 April 16 – Richard Marshal, 3rd Earl of Pembroke (dob. unknown)
 June 18 – Emperor Chūkyō of Japan (born 1218)
 August 31 – Emperor Go-Horikawa of Japan (born 1212)
 Alan, Lord of Galloway
 Stefan Radoslav, King of Serbia (born 1192)

 Monarchs 
 Aragon – James I King of Aragon and count of Barcelona (reigned from 1213 to 1276)
 Castile – Ferdinand III, the Saint King of Castile and León (reigned from 1217 to 1252)
 Navarre – Sancho VII the Strong King of Navarre (reigned from 1194 to 1234)