Saint Llawddog , or Lleuddad , ( 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 National Library of Wales (late 16th cent.). The churches of Cenarth, Penboyr, 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 local parish Church is dedicated to Saint Llawddog. Although the present building is relatively modern, it is on an important ancient site, and was the “bishop house” of the Cantref of Emlyn.
Within the Churchyard is a stone with Ogam Scrip, still visible and a stone’s thow away on the south side of the river is the Holy Well of St Llawddog.