Margaret was the younger child of the LusignanCypriotprincess Isabella and Henry, member of the Ramnulfid dynasty which ruled the Principality of Antioch. Like her brother, King Hugh III of Cyprus, Margaret adopted her mother's name. The Templar of Tyre, who served as her page in1268, recorded that she was "particularly fair of face" at the time, but that later in life she became "enormously fat" and started to resemble her father. According to the British historian Steven Runciman, Margaret was considered "the loveliest girl of her generation". King Hugh III of Cyprus, Margaret's brother, became also King of Jerusalem in 1268, ending a long period of absentee Hohenstaufen kings during which the city of Tyre had been alienated from the royal demesne by Philip of Montfort. Hugh was, however, not only too weak to act against Philip but also needed his help in defending the remnants of the kingdom against the neighbouring Mamluk Sultanate. The two men thus came to an agreement: Philip's son John would marry Margaret and Hugh would grant Tyre to John and his descendants by Margaret. If the couple were childless, the lordship would revert to the royal demesne. Philip accepted and ceded rule over Tyre to his son. This marriage may have been envisaged even before Hugh ascended the throne of Jerusalem, but it only took place in 1269.
Rule
Margaret was widowed on 27 November 1283. Her husband had been severely afflicted by gout and she had no children by him. King Hugh allowed the lordship of Tyre to pass to her brother-in-law Humphrey, but reclaimed it when he died on 12 February 1284. Margaret was then confirmed as Lady of Tyre, while her brother died in March. The Mamluk sultan Al-Mansur Qalawun made clear his intention to attack the remaining Crusader states in 1285. Margaret and her sister-in-law Eschiva of Ibelin, who ruled Beirut alone since Humphrey's death, quickly moved to secure a truce with him. The text of Margaret's treaty with Qalawun survives, signed by "the exalted Lady, Dame Margaret, the daughter of Sir Henry, the son of Prince Bohemond, the Lady of Tyre", and is considered exemplary of early Mamluk diplomacy. In 1291, Margaret ceded the lordship of Tyre to her nephew, Amalric. She then retired to Cyprus, now ruled by her nephew King Henry II, and entered the monastery of Our Lady of Tyre in Nicosia. She died there as a nun on 30 January 1308.
