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 king and were essential to his day-to-day rule. Being a member of these inner circles brought huge advantages, as it was easier to gain favours from the king, file lawsuits, marry a wealthy heiress or have one's debts remitted. By the time of Henry II, these posts were increasingly being filled by "new men" from outside the normal ranks of the barons. This intensified under John's rule, with many lesser nobles arriving from the continent to take up positions at court; many were mercenary leaders from Poitou. These men included soldiers who would become infamous in England for their