John of Caesarea

According to the chronicler Philip of Novara, John conspired with Anceau de Brie to assassinate Frederick on this occasion.

"[1] During the civil war that followed the rupture between the emperor and the Ibelin family, John's father died in battle on 24 June 1229.

[1] In 1231, Lord Balian of Sidon, the bailiff of the Kingdom of Jerusalem, declared John's fiefs forfeit, but was unable to put the command into effect.

[1] In 1231, when Richard Filangieri, Frederick's choice of bailiff of Jerusalem, came to the Haute Cour in Acre, John led the opposition towards him.

When an assembly of the Haute Cour threatened to turn violent on Frederick's representative, Bishop Radulf of Sidon, John intervened to save him.

His uncle soon arrived to Acre to be accepted as head of the commune and promptly left, having placed John in charge as his lieutenant.

[2] In October 1232 he was again second of the secular witnesses, after Odo of Montbéliard, in an accord between Henry I and John's uncle-in-law, Eustorge de Montaigu, Archbishop of Nicosia.

[3] In February 1236, Pope Gregory IX wrote a letter to the barons of Cyprus and Jerusalem urging them to make peace with the emperor and offering his own terms.

[1] That year, the lords of Caesarea and Beirut joined the Hospitallers to unsuccessfully besiege Muslim-held castle of Montferrand, where John of Ibelin died.

According to one section of the Lignages, a daughter named Alice married Richard de Dampierre and was the mother of Eudes.