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, King of England the baronial uprising during John's final years as king; James Holt describes the path to civil war as "direct, short and unavoidable" following the defeat at Bouvines. In 1214 John began his final campaign to reclaim Normandy from Philip. John was optimistic, as he had successfully built up alliances with the Emperor Otto, Renaud of Boulogne and Count Ferdinand of Flanders; he was enjoying papal favour; and he had successfully built up substantial funds to pay for the deployment of his experienced army. Nonetheless, when John left for Poitou in February 1214, many barons refused to provide military service; mercenary