Historical Events In 1256
Tuesday, 17 February 2026
Jan 28 Willem II, earl of Holland/German emperor (1238, 47-56), dies at 22 


Apr 13 The Grand Union of the Augustinian order formed when Pope Alexander IV issues a papal bull Licet ecclesiae catholicae 


May 04 The Augustinian monastic order is constituted at the Lecceto Monastery when Pope Alexander IV issues a papal bull Licet ecclesiae catholicae. 


Dec 15 Hulagu Khan captures and destroys the Hashshashin stronghold at Alamut in present-day Iran as part of the Mongol offensive on Islamic southwest Asia. 


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