- Seithenyn
Seithenyn (sometimes spelt Seithennin) is a figure from Welsh legend, apparently contemporary with King
Gwyddno Garanhir . He is the protagonist of a poem in the Llyfr Du Caerfyrddin (Black Book of Carmarthen). According to legend, he was responsible for the sea-defences ofCantre'r Gwaelod (the 'Lowland Hundred') or "Maes Gwyddno" ('Plain of Gwyddno'), in the kingdom of the legendary Gwyddno Garanhir, but neglected them one night because of his drunkenness. Because of this neglect, the sea overran it.Cantre'r Gwaelod is said to lie beneath the waters of
Cardigan Bay off the coast ofCeredigion nearAberdyfi ,Wales . Seithenyn, (in some later sources the son of Seithyn Saidi), was in charge of the embankment there, and as such, it was his failure to discharge his duties which led to its drowning. Seithenyn is also listed in the Triads of the Island of Britain as one of the "Three Immortal Drunkards of the Isle of Britain".Sir John Rhys posited a connection between Seithenyn and the
Setantii , aCelt ic tribe living in what is now the north west ofEngland . ["Celtic Folklore: Welsh and Manx"(1901), Ch. 6] .Notes
References
*Rhys, John (1901). " [http://www.sacred-texts.com/neu/cfwm/index.htm Celtic Folklore: Welsh and Manx] "
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