Editing Gwydion (section)

===Birth of Lleu===
When Math hears of the assault on Goewin, he [[Shapeshifting|turns]] his nephews into a series of mated pairs of animals: Gwydion becomes a [[stag]] for a year, then a [[pig|sow]] and finally a [[wolf]]. Gilfaethwy becomes a [[deer|hind]], a [[wild boar]] and a she-wolf. Each year they produce an offspring which is sent to Math: [[Hyddwn]], [[Hychddwn]] and [[Bleiddwn]]. After three years, Math releases his nephews from their punishment and begins the search for a new foot-holder. Gwydion suggests his sister [[Arianrhod]], who is magically tested for virginity by Math. During the test, she gives birth to a "sturdy boy with thick yellow hair" whom Math names [[Dylan ail Don|Dylan]] and who takes on the nature of the seas until his death at his uncle [[Gofannon]]'s hands.

Ashamed, Arianrhod runs to the door, but on her way out something small drops from her, which Gwydion wraps up and places in a chest at the foot of his bed. Some time later, he hears screams from within the chest, and opens it to discover a baby boy. Some scholars have suggested that in an earlier form of the Fourth Branch, Gwydion was the father of Arianrhod's sons.<ref name="MacKillop">MacKillop, ''Oxford Dictionary of Celtic Mythology'', p. 24.</ref>