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 making payments in late 1214, leaving two-thirds of the sum unpaid; Innocent appears to have conveniently forgotten this debt for the good of the wider relationship. Tensions between John and the barons had been growing for several years, as demonstrated by the 1212 plot against the king. Many of the disaffected barons came from the north of England; that faction was often labelled by contemporaries and historians as "the Northerners". The northern barons rarely had any personal stake in the conflict in France, and many of them owed large sums of money to John; the revolt has been characterised as