The legend states that he was then raised at his court in Aberdyfi and that at the age of 13, he visited King Maelgwn Gwynedd, Elffin's uncle, and correctly prophesied the manner and imminence of Maelgwn's death.
A lenda  afirma que foi educado na súa corte en Aberdyfi e que cando tiña trece anos visitou ao rei Maelgwn Gwynedd, tío de Elffin, e profetizou correctamente a maneira e a inminencia da morte de Maelgwn.