NIGHTBRINGER | The Arthurian Encyclopedia

Gwyl

‘Modest’
Gwyll

One of Arthur’s three mistresses, according to the Welsh Triad 57.

She was also the daughter of Gendawd.


See also
Garwen | The Legend of King Arthur
Indeg | The Legend of King Arthur


Source
Triads of the Island of Britain (Welsh ”Triads”) | 11th century to 14th century