After a long summer of marching around in the mountains, with some deft maneuvering and the surprise appearance of an Irish army from Leinster, King Nanteleod of Escavalon traps the Three Cadlews of Norgales and a battle ensues. The Cadlews are defeated and killed.
After their defeat, King Nanteleod names the nobleman Maelgwn to be king of Norgales, to serve as Nanteleod’s vassal.