NIGHTBRINGER | The Arthurian Encyclopedia

Nasiens


Named as one of the Twenty-Four Knights of King Arthur’s court, it seems likely that this is a simple variant of Nascien, the most likely contender being the first Nascien.

In the Welsh Triads, the King of Denmark is the father of Arthur’s warrior Nasiens.


Source
Triads of the Island of Britain (Welsh ”Triads”) | 11th century to 14th century