John of Arsuf

John of Ibelin (c. 1211–1258), commonly called John of Arsuf, was the lord of Arsuf from 1236 and Constable of Jerusalem from 1251. He was a younger son of John I of Beirut. His elder brother, Balian, inherited Beirut. He served as regent of Jerusalem on two occasions: 1253–1254 for Conrad II and 1256–1258 for Conrad III. He was lieutenant for the regent on three occasions: 1247–1248 and 1249–1252 for Henry I of Cyprus and 1258 for Plaisance of Antioch.