10th February » Baghdad Siege of Baghdad (1258) known as falls to the Mongol Empire named Mongols, and the Abbasid Caliphate is destroyed.
25th August » Regent George Mouzalon and his brothers are killed during a coup headed by the aristocratic faction under, paving the way for its leader, Michael VIII Palaiologos, to ultimately usurp the throne of the Empire of Nicaea.
Famous Deaths in History for 1258
16th August » Theodore II Laskaris, Byzantine-Greek emperor (b. 1222)