Question: What is the place of birth of Edward Despenser (Died 1342)'s mother?

Knowledge 1: Edward Despenser (died 1342)
Edward le Despenser (died 1342) was a son of Hugh le Despenser the Younger by his wife Eleanor de Clare.His father, a favourite of Edward II of England, was executed in 1326.Through his mother, he was a great-grandson of EdwardI of England. [SEP] Knowledge 2: Eleanor de Clare
Eleanor de Clare, suo jure 6th Lady of Glamorgan (3 October 1292-30 June 1337) was a powerful English noblewoman who married Hugh Despenser the Younger and was a granddaughter of Edward I of England.With her sisters, Elizabeth de Clare and Margaret de Clare, she inherited her father's 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 of Gilbert de Clare, 6th Earl of Hertford, 7th Earl of Gloucester, 5th Lord of Glamorgan and Princess Joan of Acre.
Knowledge 1: Edward Despenser (died 1342)
Edward le Despenser (died 1342) was a son of Hugh le Despenser the Younger by his wife Eleanor de Clare.His father, a favourite of Edward II of England, was executed in 1326.Through his mother, he was a great-grandson of EdwardI of England. [SEP] Knowledge 2: Hugh Despenser the younger
Hugh le Despenser, 1st Lord Despenser( c. 1286 – 24 November 1326), also referred to as" the younger Despenser", was the son and heir of Hugh le Despenser, Earl of Winchester( the elder Despenser) by his wife Isabella de Beauchamp, daughter of William de Beauchamp, 9th Earl of Warwick.He rose to national prominence as royal chamberlain and a favourite of Edward II of England.Despenser made many enemies across the nobility of England which, after the overthrow of Edward, eventually led to him being charged with high treason and ultimately hanged, drawn and quartered.
Knowledge 1: Eleanor de Clare
Eleanor de Clare, suo jure 6th Lady of Glamorgan (3 October 1292-30 June 1337) was a powerful English noblewoman who married Hugh Despenser the Younger and was a granddaughter of Edward I of England.With her sisters, Elizabeth de Clare and Margaret de Clare, she inherited her father's 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 of Gilbert de Clare, 6th Earl of Hertford, 7th Earl of Gloucester, 5th Lord of Glamorgan and Princess Joan of Acre. [SEP] Knowledge 2: Hugh Despenser the younger
Hugh le Despenser, 1st Lord Despenser( c. 1286 – 24 November 1326), also referred to as" the younger Despenser", was the son and heir of Hugh le Despenser, Earl of Winchester( the elder Despenser) by his wife Isabella de Beauchamp, daughter of William de Beauchamp, 9th Earl of Warwick.He rose to national prominence as royal chamberlain and a favourite of Edward II of England.Despenser made many enemies across the nobility of England which, after the overthrow of Edward, eventually led to him being charged with high treason and ultimately hanged, drawn and quartered.

Answer: Caerphilly