Glifieu
An Arthurian warrior who was the son of Taran.
Glinyeu was loyal to the warrior Gwythyr (Gwythr), and he joined Gwythyr’s army when Gwythyr opposed Gwynn ap Nudd. Glinyeu was taken prisoner by Gwynn and was not released until Arthur intervened.
In the non-Arthurian Welsh tale of Branwen, Glinyeu is one of only seven British warriors to survive King Bran’s successful invasion of Ireland.
Source
Culhwch and Olwen | Late 11th century