Dictionary of Welsh Biography

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MAREDUDD ap GRUFFYDD ap RHYS ( 1130 or 1131 - 1155 ), prince of Deheubarth ;

eldest son of Gruffydd ap Rhys by Gwenllian , daughter of Gruffudd ap Cynan . Six years old when his father d. in 1137 , he came into prominence at 16 assisting an older half-brother, Cadell , in freeing southern Ceredigion of the Normans , and in defending the recently captured fortress of Carmarthen . In 1151 he took a leading part in driving the men of Gwynedd back beyond the Dovey , and in the same year the burden of leadership in the south fell on him owing to the incapacitation of Cadell . Four years later he d. at the early age of 25, having already earned a noble reputation in both peace and war, and passing his burden on to a younger brother, the future ‘lord’ Rhys (q.v.) .


  • A History of Wales: from the Earliest Times to the Edwardian Conquest ;
  • Giraldi Cambrensis Opera (1861–91)


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

Published date: 1959