Bleiddwn

Bleiddwn is presented in the fourth branch of the Mabinogi (the tale often titled Math, son of Mathonwy) as the offspring produced in the year when Gwydion and Gilfaethwy were magically transformed into wolves as punishment. Born of those wolf-forms, the child is taken by Math, who transforms him into a human being and baptises him with the name Bleiddwn, thereby converting an anomalous origin into a socially recognized human identity.

The sources provide no detailed physical description beyond that Bleiddwn was the child born to two parents in wolf-form and was thereafter transformed into a human by Math. No specifics of age, stature, clothing, or visible wolf-markings are preserved in the cited material.

No special powers, habitual behaviors, or ongoing supernatural activities are attributed to Bleiddwn in the provided sources. He functions in the narrative as a child born of transformed parents who is restored to human status by Math; the texts do not ascribe any distinctive abilities to him.