Nightbringer | The Arthurian Online Encyclopedia

Gecron


The son of the Babylonian king Micipsa, who fought against Arthur’s army at the battle of Soissons. He saw his father fall to the sword of Earl Leir of Boulogne (Leodegar), and he slew Leir in revenge.


Source
Brut | Layamon, late 12th century to mid-13th century