Cynon ap Clydno

Cynon does not have a single mythic origin in the supplied material; rather he is attested in two overlapping literary strains. He is named in the early North‑Brittonic martial corpus (Y Gododdin) as a warrior associated with the Battle of Catraeth and the courtly milieu of the Hen Ogledd (son of Clydno Eiddin). Separately, in the medieval Welsh prose romance tradition preserved in the Mabinogion (the Owain tale), he appears as an attendant of King Arthur at Caerleon who recounts a quest he undertook to find a worthy opponent. These attestations reflect a process of poetic commemoration and romantic adaptation rather than a single biographical origin.

The supplied sources give no detailed physical description. Texts identify him by patronymic and social relationships—Cynon ap Clydno (son of Clydno Eiddin), associated with Morvydd (his love-interest) and named among Arthur's Three Counsellor Knights—rather than by bodily attributes or particular clothing. Narrative episodes describe him acting in martial and courtly contexts but do not record specific bodily features.

Sources depict Cynon as a celebrated and capable human warrior and courtier rather than a supernatural being. In Y Gododdin he is praised for martial prowess among the fighters at Catraeth. In the Owain tale he is a questing narrator who follows a guide into liminal, enchanted places, performs prescribed actions at a fountain that provoke a supernatural martial encounter, endures a hailstorm and a Black Knight's assault, and is subsequently tended by the lord of a shining castle. He also serves as one of Arthur's trusted counsellors and as an exemplar of ardent love toward Morvydd.