At his father's death at the siege of Varilhes in the Albigensian Crusade in 1228, he succeeded to his French seigneuries. His first wife was Eleonore de Courtenay (d. bef. 1230), daughter of Peter II of Courtenay.[3] Philip joined the party of his uncle, John of Ibelin, against the representatives of Frederick II. In 1244, he was created Constable of Jerusalem, but was subordinate to Walter IV of Brienne at the Battle of La Forbie. Philip was one of the few Christian knights to escape the disaster there. In 1246, Henry I of Cyprus, then Regent of Jerusalem, created him Lord of Tyre as a reward for his services to the baronial party. While the legality of this grant was somewhat dubious, it was recognized by Hugh I c. 1269; but Hugh reserved the right to buy back the fief.
He joined the Seventh Crusade, and was employed as the ambassador of Louis IX of France in negotiations for a truce and retreat from Damietta. In 1256, he expelled the Venetians from Tyre, an action which helped to precipitate the War of St. Sabas. During that conflict, he attempted to relieve the GenoeseinAcre in 1258, but was repulsed, which helped decide the struggle for the Venetians. In 1266, he lost Toron to the Sultan Baibars; but even in Philip's old age, Baibars feared both his energetic leadership and the possible success of his appeals to Europe for aid. In 1270, Philip was killed by an Assassin possibly in the employ of Baibars.[4]
^Hoefer, Nouvelle biographe universelle depuis les temps les plus recules... Volume 36. 1861. p. 262
^Esneval, Baron d', 'les seigneurs de Pavilly, barons d'Esneval', vidames de Normandie Revue catholique de Normandie, 1918, vol 27, p.170-184; p. 193-207; p. 270-277; et 1919, vol 28, p.25-30
Baldwin, Philip Bruce (2014). Pope Gregory X and the Crusades. The Boydell Press.
de Boos, Emmanuel (2004). L'armorial le Breton: Centre historique des Archives nationales (France) (in French). Somogy editions d'art.
Edbury, Peter W. (2001). "The De Montforts in the Latin East". In Prestwich, Michael; Britnell, R. H.; Frame, Robin (eds.). Thirteenth Century England VIII: Proceedings of the Durham Conference 1999. The Boydell Press.
