1) Medieval Welsh literature 2) Welsh mythology
Found on
https://www.crosswordclues.com/clue/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 of Cantre`r Gwaelod (The Lowland Hundred) or Maes Gwyddno (the Plain of Gwydd....
Found on
http://en.wikipedia.org/wiki/Seithenyn
No exact match found.
