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 Chukyo 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/Presidents
Aragon - James I King of Aragon and count of Barcelona (reigned from 1213 to 1276)
Castile - Ferdinand III, the Saint King of Castile and Leon (reigned from 1217 to 1252)
Navarre - Sancho VII the Strong King of Navarre (reigned from 1194 to 1234)