Isabella of Ibelin (1241–1324) was queen of Cyprus and Jerusalem by marriage to Hugh III of Cyprus.
Isabella was the daughter of Guy of Ibelin, marshal and constable of the Kingdom of Cyprus. She married Hugh of Antioch, who succeeded his childless cousin Hugh II as king of Cyprus in 1267 thanks to her family's connections. In 1268, her husband became king of Jerusalem too. He died in 1284 and the crowns passed to their sons, first John I and shortly after to Henry II.
When her son Amalric seized power in 1306, Queen Isabella and her brother Philip unsuccessfully supported her older son King Henry. Amalric was murdered on 5 June 1310, and another son, Aimery, was proclaimed governor in his stead. But by 11 June, supporters of the imprisoned king contacted their mother, Queen Isabella, papal representatives, and Aimery's party. Aimery was outnumbered and agreed with his supporters to restore Henry in return for Isabella's promise to persuade Henry to pardon them and to ratify legal transactions they made. Envoys reported to King James II of Aragon, husband of Isabella's daughter Maria, that Isabella and Philip dominated Henry's court in the rest of his reign.
Issue
Isabella and Hugh III had the following children:
John I (c. 1268 – 20 May 1285), who succeeded him as king of Jerusalem and Cyprus
Bohemond (c. 1268 – Tyre, 3 November 1281, buried at the Franciscan Church of Nicosia)
Henry II (June 1270 – 31 August 1324), who succeeded John as king of Jerusalem and Cyprus
Amalric (c. 1272 – 5 June 1310), constable of Jerusalem, who displaced Henry and became regent of Cyprus
Marie (1273 – April 1319 at Tortosa and buried at Barcelona), who married King James II of Aragon
Aimery (1275 – 1316), succeeded Guy as constable of Cyprus in 1303, briefly succeeded Amalric as regent and governor of Cyprus on 6 June 1310
Guy (c. 1275/1280 – 1303, probably buried at Nicosia), constable of Cyprus c. 1291, married on 7 December 1291 Eschiva of Ibelin, Lady of Beirut (1253–1312)
Margaret (c. 1276 – in Armenia, 1296), who married King Thoros III of Armenia
Alice (1277–1280 – after March 1324), who married 1292–1295 or c. 1292/1294 Balian of Ibelin (died 1315/1316 in Kerynia, soon before 19 April 1316), titular Prince of Galilee and Bethlehem
Helvis (died after March 1324)
Isabella (c. 1280 – 1319), who married firstly in 1285/1290 Constantine of Neghir, lord of Partzerpert (died 1308), and secondly c. 1310 King Oshin of Armenia, who divorced her before or in 1316