Eleanor de Clare, suo jure 6th Lady of Glamorgan was a powerful English noblewoman who married Hugh le Despenser, 1st Baron Despenser and was the granddaughter of Edward I of England. With her sisters, Elizabeth de Clare and Margaret de Clare, she inherited her fathers estates after the death of her brother, Gilbert de Clare, 8th Earl of Gloucester, 7th Earl of Hereford at the Battle of Bannockburn in 1314. She was born in 1292 at Caerphilly Castle in Glamorgan, Wales and was the eldest daughter Gilbert de Clare, 6th Earl of Hertford, 7th Earl of Gloucester, 5th Lord of Glamorgan and HRH Princess Joan of Acre.
NA
Source: Wikipedia