NIGHTBRINGER | The Arthurian Encyclopedia

Nerthach

‘Strong’
Nertach

Son of Gwawrddur Hunchback and brother of Duach, Brathach, and the lady Gwenwledyr.

He was one of King Arthur’s warriors in Welsh legend. According to the tales, Nerthach and his brothers were

sprung from the Highlands of Hell.

Nerthach was also the name of a city.


Source
Culhwch and Olwen | Late 11th century