Smyrniote crusades

The Smyrniote crusades (1343–1351) were two Crusades sent by Pope Clement VI against the Beylik of Aydin under Umur Bey which had as their principal target the coastal city of Smyrna in Asia Minor. The crusade was mostly successful in restricting piracy and leading to Umur's death and Smyrna remained in Latin hands until 1402.