Seithenyn (sometimes spelt Seithennin) sometimes known as Seithenyn of the feeble mind is a figure from Welsh legend, apparently contemporary with King...

Sir John Rhys linked the name of the Setantii with Seithenyn, a figure in Welsh mythology. Seithenyn was a prince with responsibilities over the sea defences...

of the realm held charge over the dyke. One of these princes, called Seithenyn, is described in one version as a notorious drunkard and carouser, and...

Cardigan Bay was drowned due to the drunkard negligence of its prince, Seithenyn, who allowed the sea to sweep through the floodgates. The tale of Lyonesse...

had to be shut before high tide. One day the keeper of the floodgates, Seithenyn, was drunk and failed to close them, with the result that the sea rushed...

the adventures of the bard Taliesin, the princes Elphin ap Gwythno and Seithenyn ap Seithyn, and King Arthur. Peacock researched his story from early Welsh...

peninsula. Saint Tudno is said to have been one of the seven sons of King Seithenyn, whose legendary kingdom Cantref y Gwaelod in Cardigan Bay was submerged...

century 5, 6 or 7 November, or 13 Aug (trad.) Abbot Descended from both Seithenyn, king of Gwyddno, & Brychan, king of Brycheiniog Cyllin 1st century Son...

of North Wales, who is said to have been one of the seven sons of King Seithenyn, whose legendary kingdom, Cantref y Gwaelod in Cardigan Bay was submerged...

in Welsh literature and Welsh mythology. In one version of the story, Seithenyn, a prince of the kingdom, is a notorious drunk and it was through his...