- Apr 13 The Grand Union of the Augustinian order formed when Pope Alexander IV issues papal bull Licet ecclesiae catholicae
- May 4 Augustinian monastic order constituted at the Lecceto Monastery when Pope Alexander IV issues papal bull Licet ecclesiae catholicae
- Dec 15 Hulagu Khan captures and destroys Hashshashin stronghold at Alamut, in present-day Iran, part of the Mongol offensive on Islamic southwest Asia