Along with the powerful Ibelin family, Philip was a supporter of Melisende during her conflict with her son Baldwin III. In the division of the kingdom in 1151, Melisende gained control of its southern part, including Nablus. Despite this arrangement, Philip assisted Baldwin during the siege of Ascalon in 1153. He granted estates to Order of Saint Lazarus in 1153. From 1155, Philip was regularly listed among the witnesses on Baldwin's charters. He participated in the relief of Banyas in June 1157, but he and his troops soon returned home, and were not present at Nur ad-Din's subsequent ambush of Baldwin at Jacob's Ford. Lord of Oultrejordain Philip exchanged the lordship of Nablus with Baldwin III for Oultrejordain on 31 July 1161. For Melisende was dying, the agreement was confirmed by her sister, Hodierna, on her behalf. The king retained the revenues from tolling the caravans and the Bedouin tribes crossing Oultrejordain. One of Philip's new vassals, John Gothman, was required to directly swear fealty to the king. Philip strengthened Kerak Castle with a ditch and towers. He made a pilgrimage to Saint Catherine's Monastery in the early 1160s. Knight Templar Philip joined the military order of the Knights Templar in January 1166, passing on to them a significant part of Oultrejordain, including the castle of Ahamant. Acting against the decision of the Templars, Philip joined Amalric's invasion of Egypt in 1167. The Ibelin family later recalled an event during the siege of Bilbeis, in which Philip saved the life of Hugh of Ibelin, who had broken his leg when his horse fell in a ditch. The Templars as a whole refused to support Amalric's invasion, and the king blamed them for the failure of the expedition. After the death of their Grand Master Bertrand de Blanchefort in January 1169, Amalric pressured them to elect Philip in his place in August of that year. With the election of Philip, Amalric regained Templar support for the invasion of Egypt, although by the end of the year Amalric was forced to retreat. For unknown reasons Philip resigned as Grand Master in 1171, and was succeeded by Odo de St Amand. Philip accompanied Amalric to Constantinople as ambassador to the Byzantine Empire in order to restore good relations with them after the failure of the Egyptian invasion. He probably died on April 3, before reaching Constantinople. Family Philip's personal life is largely a