Dylan ail Don

Dylan ail Don (Welsh pronunciation: [ˈdəlan ˈail ˈdɔn]) (also seen in other translated languages as Dylan Eil Ton (in Middle Welsh), Dylan O'Taine, Dylan ElTon, Dylan Aldon, and Dylan Ui Dan) is a character in the Welsh mythic Mabinogion tales, particularly in the fourth tale, "Math fab Mathonwy". The story of Dylan reflects ancient Celtic myths that were handed down orally for some generations before being written down during the early Christian period by clerics. The story as it has been preserved therefore exhibits elements and archetypes characteristic of both Celtic pagan and Christian mythologies. His name translates as "Dylan the Second Wave", referring to him as being the second born (ail don meaning "second wave") of Arianrhod.

In Math fab Mathonwy it is told that Dylan's great uncle Math would die if he did not keep his feet in the lap of a virgin when not at war. Math's original foot-holder, Goewin, is raped by Gilfaethwy who is punished severely when Math returns, turning Gilfaethwy and Gwydion into a series of mated pairs of animals. Math then marries Goewin to alleviate her shame, but must find a new virgin to hold his feet. Gwydion suggests his sister, Arianrhod.

One of the sons, Lleu Llaw Gyffes, is borne away as a "lump of flesh" and concealed in a chest until maturity, but the other was immediately forsaken by his mother yet was acknowledged by his great uncle Math and given the name Dylan. As soon as Dylan comes in contact with his baptismal waters, he plunges into the sea and takes on characteristics of a sea creature, moving through the seawater as perfectly as any fish:

'So they had the boy baptised, and as they baptised him he plunged into the sea. And immediately when he was in the sea, he took its nature, and swam as well as the best fish that was therein. And for that reason was he called Dylan, the son of the Wave'

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