Historical Events May 29 Chinese city of Kaifeng, capital of the Jurchen Jin dynasty, surrenders to the Mongols under General Subedei after a siege of more than a year Jul 1 Earl Otto II van Gelre grants Arnhem state justice Famous People Who Died in 1233 Mar 1 Thomas, Count of Savoy, dies at 55 Jul 27 Ferrand of Portugal, earl of Flanders, dies at 45 1232 History by Year 1234