Nightbringer | The Arthurian Online Encyclopedia

Cerenhyr

‘King of Kingsmen’
Cerenhyr

Son of Gereinyawn and father of Arthur’s warrior Berwyn.

A Welsh Triad lists him as one of the three

who could not be expelled from Arthur’s court.


Sources
Triads of the Island of Britain (Welsh ”Triads”) | 11th century to 14th century
Culhwch and Olwen | Late 11th century