Ethyllt ferch Cynan

Ethyllt ferch Cynan, also known as Esyllt ferch Cynan Dindaethwy, was the daughter of King Cynan Dindaethwy ap Rhodri of Gwynedd.

Marriage
In 768 she was married to Gwriad ap Elidyr. It is possible this was a later invention to legitimise the claims to Gwynedd of the descendants of Merfyn Frych; according to some source Merfyn was her son, in others he was her husband and Esyllt was the mother of Rhodri Mawr. After the death of her father in 816, the throne was secured by her uncle Hywel ap Rhodri Molwynog.