Events Pre-1600 962 – Emperor Otto I and Pope John XII co-sign the Diploma Ottonianum, recognizing John as ruler of Rome. 1258 – Siege of Baghdad: Hulegu Khan, a prince of the Mongol Empire, orders his army to sack and plunder the city of Baghdad, which they had just captured. 1322 – The central tower of Ely Cathedral falls on the night of 12th–13th. 1462 – The Treaty of Westminster is finalised between Edward IV of England and the Scottish Lord of the Isles. 1503 – Challenge of Barletta: Tournament between 13 Italian and 13 French knights near Barletta.; 1542 – Catherine Howard, the fifth wife of Henry VIII of England, is executed for adultery.
Events Pre-1600 962 – Emperor Otto I and Pope John XII co-sign the Diploma Ottonianum recognizing John as ruler of Rome 1258 – Siege of Baghdad Hulegu Khan a prince of the Mongol Empire orders his army to sack and plunder the city of Baghdad which they had just captured 1322 – The central tower of Ely Cathedral falls on the night of 12th–13th 1462 – The Treaty of Westminster is finalised between Edward IV of England and the Scottish Lord of the Isles 1503 – Challenge of Barletta Tournament between 13 Italian and 13 French knights near Barletta; 1542 – Catherine Howard the fifth wife of Henry VIII of England is executed for adultery