of Dôn") and the Plant Llŷr ("Children of Llŷr"). Children of Dôn Dôn, daughter of Mathonwy, was the matriarch of one family. Her husband is never specifically named. Gwydion: A skilled magician and warrior. Appears most prominently in the fourth branch of the Mabinogi, as well as in the Welsh Triads, the Englynion y Beddau and several poems in the Book of Taliesin. Arianrhod: Gwydion's main antagonist; Lleu's mother. According to one of the Welsh Triads, her father was Beli Mawr (see Family of Beli Mawr). Eufydd fab Dôn: A character of whom very little is known; probably a reflex of the Gaulish god Ogmios. Appears in two poems from the Book of Taliesin. Gilfaethwy: Appears in Math fab Mathonwy, as well as in several French Arthurian tales under the name Griflet filz Do. Gofannon: A metalsmith considered to be, like the Irish Goibniu, a reflex of the Gallo-Roman deity Gobannus. He is mentioned in both Culhwch and Olwen and Math fab Mathonwy; in the latter, he is held responsible for the death of his nephew, Dylan. Amaethon: Presumed agricultural deity, mentioned in both Culhwch and Olwen and more prominently in Cad Goddeu in which he is the catalyst of a war between Gwynedd and Annwn. Other figures associated with the Children of Dôn include: Math fab Mathonwy: Dôn's brother, a skilled wizard and king of Gwynedd. Appears prominently in the fourth branch of the Mabinogi, as well as in the Welsh Triads and several instances of medieval Welsh verse. Dylan ail Don: Firstborn son of Arianrhod, who "took on the nature of the sea" and "swam as well as the best fish that was within." He was killed by his uncle Gofannon. Appears in Math fab Mathonwy and in the Death Song of Dylan, found in the Book of Taliesin. Lleu: Arianrhod's second son and Dylan's twin brother. Appears prominently in the fourth branch of the Mabinogi, which describes his birth, marriage, death, resurrection, and ascension to the throne of Gwynedd, and is also mentioned in the Welsh Triads and in various medieval poems. He is a reflex of the Gaulish deity Lugus and cognate with the Irish god Lugh Lámhfhada. Blodeuwedd: A beautiful woman created by Math and Gwydion from flowers as a wife for Lleu, whom she betrayed for her lover, Gronw. Gwydion turned her into an owl for her crimes. Appears in Math fab Mathonwy. Gronw