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OWAIN ap EDWIN (d. 1104), Welsh chieftain, was the son of Edwin ap Gronw ap Einon ap Owen ap Hywel Dda and Iwerydd, daughter of Cynfyn ap Gwerstan. His father held Counsillt (near Flint) from Robert of Rhuddlan at the time of the Domesday survey, and was probably the most important Welshman at this time in Tegeingl. To this position Owain probably succeeded about 1090. In 1098 he gave assistance to his suzerain, Earl Hugh of Chester, and to Earl Hugh of Shrewsbury in their joint invasion of Anglesey, and thereby acquired the name of ‘Owain Fradwr’ (i.e. the Traitor). On the flight of Gruffydd ap Cynan and Cadwgan ap Bleddyn in the same year the invaders set him up as ruler over Gwynedd; but a revolt of the Welsh brought the two leaders back from Ireland in 1099, and Owain's rule came to an end. He died in 1104, after a long illness. His sons, Llywarch, Gronw, Rhiddid, Meilyr, and Ieuaf, were men of importance in Tegeingl, and some of them founded families of note in the district. His daughter Angharad was the wife of Gruffydd ap Cynan [q. v.]

[Annales Cambriæ; Brut y Tywysogion, Oxford edit.; Brut y Saeson, in the Myvyrian Archaiology.]

J. E. L.