Hênwen, Hên Wen
The stories and Triads in which Henwen appears are non-Arthurian – with the exception of a single re-written Triad, in which Arthur chases and tries to destroy Henwen because it has been prophesied that her offspring will worsen the state of the world. After giving birth to several piglets, she dove into the ocean from a cliff at Penryn Awstin. This hunt is reminiscent of his pursuit of Twrch Trwyth in Culhwch and Olwen.
Triads of the Island of Britain (Welsh ”Triads”) | 11th century to 14th century