Olwyn

Daughter of the chief giant Ysbaddaden, and object of Culhwch’s affection in Culhwch and Olwen. She was incredibly beautiful, and it was said that when she walked, white trefoils sprouted behind her. Culhwch’s stepmother obliged him to marry Olwen, and his heart swelled at the very mention of her name, even though he had never seen her. After a long journey, he found her at Ysbaddaden’s fortress. She said she could not leave with him without her father’s permission, but advised Culhwch to ask Ysbaddaden for her, and to accomplish whatever tasks the giant set for him. Culhwch, with the great assistance of Arthur and his warriors, eventually completed the list of tasks, and returned to Ysbaddaden’s fortress. As was the decree, Ysbaddaden was killed and Olwen was married to Culhwch. In a non-Arthurian tale called Einion and Olwen, Olwen is rescued from the otherworld by a shepherd name Einion, and the two have a son named Taliesin.