NameEdnyfed AP LLYWARCH, 29G Grandfather
Web Notes notes for Ednyfed AP LLYWARCH
From the book History of the Family of Mostyn of Mostyn by Mostyn and T.A. Glenn, London, 1925, page 7:
Ednyfed, son of Llywarch Gam by Lleucu, daughter of Gwrystan, is stated in most pedigrees to have married Sioned, daughter and co-heiress of Rhiwallon ap Cynfyn, Prince of Powys, who was slain at the battle of Mechain in 1064; but, if so, Sioned must have been his second wife unless, indeed, Rhiwallon was very much older than his brother, Prince Bleddyn, and Sioned married when a mere child, as Rhys Sais, son of Ednyfed, was not born much later than about 1030.