Nightbringer | The Arthurian Online Encyclopedia

Seidi

Saidi

Son of Gwyron and father of Arthur’s warriors Alun of DyfedCadrieth, and Cas.

An unnamed son is listed in Triad no. 9 as one of the Three Chieftains of Arthur’s Court.


Sources
Culhwch and Olwen | Late 11th century
Breudwyt Rhonabwy | 13th century
Triads of the Island of Britain (Welsh ”Triads”) | 11th century to 14th century