In Welsh mythology, Gwythyr ap Greidawl was a rival of Gwyn ap Nudd, a deity connected with the otherworld. In the Middle Welsh prose tale Culhwch ac Olwen...

he abducts his sister Creiddylad from her betrothed, Gwythyr ap Greidawl. In retaliation, Gwythyr raised a great host against Gwyn, leading to a vicious...

Mabon ap Modron, the divine son, and the psychopomp Gwyn ap Nudd make appearances, the latter in an endless seasonal battle with Gwythyr ap Greidawl for...

Arthur. The first is the daughter of Cywryd of Gwent, the second of Gwythyr ap Greidawl, and the third of (G)ogrfan Gawr ("the Giant"). In a variant of another...

Lancelot Gwyn ap Nudd Culhwch and Olwen, c. 11th century One of Arthur's knights. Brother of Edern ap Nudd, rival of Gwythyr ap Greidawl, lover of Creiddylad...

Cyledr is named as one of the warriors who joins Gwythyr ap Greidawl's failed attack on love rival Gwyn ap Nudd and is imprisoned by the enemy following...