Dictionary of Welsh Biography

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LLAWDDOG , or LLEUDDAD , saint ( fl. 600? ),

is said to have been the son of Dingad ab Nudd Hael , king of Bryn Buga (i.e. Usk ), and Tefrian or Tonwy , daughter of Lleuddyn Lwyddog . Few details are known about his life, but tradition maintains that he worked many miracles. He appears to have forsaken his father's kingdom in order to live the life of a religious recluse with his brother BAGLAN in Caernarvonshire . His later years are linked with the isle of Bardsey . He was chosen abbot of the island's religious community , and is said to have ended his days there. A Welsh ‘ Life of S. Llawddog ’ is preserved in N.L.W. Llanst. MS. 34 , of the late 16th cent. , and an early 18th cent. copy is to be found in Llanst. MS. 104 . The churches of Cenarth , Penboyr , and Llanllawddog in Carmarthenshire , and Cilgerran in Pembrokeshire were all originally dedicated to Llawddog . His memory is also perpetuated in the local topography of the places so named, in the form Lleuddad , in parts of the Llŷn peninsula . His feast-day is variously given as 15 Jan. , 21 Jan. , or 10 Aug.


  • The Lives of the British Saints , iii, 369-74;
  • A History of Wales: from the Earliest Times to the Edwardian Conquest , 266, 459;
  • J. R. Phillips , The history of Cilgerran comprising a detailed account of the castle, church, mansions, old families, men of note, tin-plate works, slate quarries, salmon fishery, &c.; including the topography of the parish; with copies of charters, and other MSS (1867) , 50-3;
  • Geiriadur Bywgraffyddol o Enwogion Cymru , ii, 195;
  • D. E. Jones , Hanes Plwyfi Llangeler a Phenboyr traethawd buddugol yn Eisteddfod Drefach-a-Felindre, Awst 18, 1897, gyda chwanegiadau (Llandysul, 1899) , 12-3, 155.


Hywel David Emanuel, M.A., (1921-70), Aberystwyth

Published date: 1959