[cf. W dyfr, waters].
Known for her golden hair, one of the Three Splendid Maidens at Arthur's court; the other two were Enid, the daughter of Yniwl, and Tegau Eurfron, much celebrated by later poets for her beauty. According to the Triads, she is the lover of Glewlwyd Gafaefawr, Arthur's doorkeeper. Identical with the figure known as Dynwir in popular tradition.