which sang so sweetly that the warrior knights stood listening entranced for eighty years. This legend appears in the Mabinogi of ‘Branwen, daughter of Llyr,’ and, as we read it there, is a medieval tale; but the medieval authors of the Mabinogion as we know them were working over old materials—telling again the old tales which had come down through unnumbered centuries from father to son by tradition. Cambrian poets of an earlier age often allude to the birds of Rhiannon; they are mentioned in the Triads.
