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
Isabella of France increased power in England and turning against Isabella, cutting off funds and harassing her household. To make matters worse, the "Great Famine" descended on England during 1315–17, causing widespread loss of life and financial problems. Despite Isabella giving birth to her second son, John, in 1316, Edward's position was precarious. Indeed, John Deydras, a royal Pretender, appeared in Oxford, claiming to have been switched with Edward at birth, and to be the real king of England himself. Given Edward's unpopularity, the rumours spread considerably before Deydras' eventual execution, and appear to have greatly upset Isabella. Isabella responded by deepening her