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 will therefore exhibit 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.