Dictionary of Welsh Biography

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OWAIN ap GRUFFYDD , or OWAIN GOCH , ( fl. 1260 ), a prince of Gwynedd ,

eldest son of Gruffydd ap Llywelyn (q.v.) by Senana , and brother of Llywelyn ap Gruffydd . Some years a prisoner of his brother, Dafydd ap Gruffydd (q.v.) , Henry III secured to him a portion of Snowdonia by the treaty of Woodstock ( 1247 ). Again deprived by Llywelyn after Bryn Derwin ( 1254 ), he spent another long period in confinement, until Llywelyn was obliged to release him after the humiliating defeat of 1277 , and to establish him as lord over part of Llŷn . The assumption has been that he d. before the final catastrophe of 1282 , but for another view which has not much to support it, see Trans. Cymm. , 1899-1900 , 44-7. Owain was undoubtedly the worst victim of the drive against the custom of partible succession pursued by the two Llywelyns .


  • A History of Wales: from the Earliest Times to the Edwardian Conquest ;
  • Littere Wallie (1940) ;
  • Calendar of Ancient Correspondence concerning Wales (1935) .


Professor Thomas Jones Pierce, M.A., F.S.A., (1905-1964), Aberystwyth

Published date: 1959