#aranrhod

   After the two nephews had been cleaned up they went to see Math, who said, ‘Men, you have earned peace, and you shall have friendship. Now advise me which virgin to choose.’ Gwydyon replied, 'Lord, that is an easy choice: Aranrhod daughter of Dôn, your niece and your sister’s daughter.’ The girl was sent for, and when she arrived Math said, 'Girl, are you a virgin?’ 'I do not know but that I am.’ Math took his wand and bent it, saying, 'Step over that, and if you are a virgin I will know.’ Aranrhod stepped over the wand, and with that step she dropped a sturdy boy with thick yellow hair; the boy gave a loud cry, and with that cry she made for the door, dropping a second small something on the way, but before anyone could get a look at it Gwydyon snatched it up and wrapped it in a silk sheet and hid it in a little chest at the foot of his bed. 'Well, ’ said Math, 'I will arrange for the baptism of this one,’ referring to the yellow-haired boy, 'and I will call him Dylan.’ The boy was baptized, whereupon he immediately made for the sea, and when he came to the sea he took on its nature and swam as well as the best fish. He was called Dylan son of Ton,  for no wave ever broke beneath him. The blow which killed him was struck by his uncle Govannon, and that was one of the Three Unfortunate Blows.

'Math Son of Mathonwy’, The Mabinogion

c. 11th century

trans. Jeffrey Gantz (1976)