NIGHTBRINGER | The Arthurian Encyclopedia

Brys

‘Haste’
Brusc

In Culhwch and Olwen, son of Brysethach and one of Arthur’s warriors.

He came from the Valley of the Black Fernery in Scotland.

He might be Brosc, an Irish leader, in Vita.


Source
Culhwch and Olwen | Late 11th century