If you wish to use Gwythr in creative work:
The text does not say. Medieval Welsh eschatology suggests that on the final Calan Mai, Gwyn (death) will finally triumph – or that Arthur himself will intervene to break the cycle. gwythr
This abduction sparked a war between the two powers. Gwythr pursued Gwyn to the ends of the earth to reclaim his bride, leading to a catastrophic battle that threatened to destroy the balance of the world. If you wish to use Gwythr in creative
“Gwyn ap Nudd was prompted to carry off Creiddylad, daughter of Lludd Llaw Eraint. Then Gwythyr ap Greidiol was greatly angered, and he warred against Gwyn. But Gwyn overcame him and took him prisoner.” gwythr