Isabella of Lusignan her half-brother King Henry III in 1254. After thirteen years of marriage Geoffery died. Isabella herself died on 14 January 1300 having most likely outlived all of her children. She had several grandchildren. Isabella also outlived all of her siblings (full and half). Isabella of Lusignan Isabella of Lusignan (c.1224 – 14 January 1300) was a daughter of Hugh X of Lusignan and his wife Isabella of Angoulême, Dowager Queen of England. Isabella was half-sister to King Henry III of England. She was Dame de Beauvoir-sur Mer et de Mercillac. Isabella's year of birth is unknown. She is mentioned in
John of Ibelin, the Old Lord of Beirut of Arsuf, making him one of the wealthiest nobles in the kingdom. From 1205 to 1210 John served as regent in Acre, the new capital of the Kingdom of Jerusalem, for Maria of Montferrat, Queen Isabella I's daughter. As regent, John helped arrange the marriage of Amalric II’s son Hugh I of Cyprus to Alice of Champagne, daughter of Amalric’s predecessor as King of Jerusalem, Henry II of Champagne. In 1210 he also helped arrange Maria of Montferrat’s marriage to John of Brienne, who was suggested by king Philip II of France. By 1217 John and his brother Philip of