"At that time TeyrnonTwrf Liant was lord over Gwent Is Coed"

Teyrnon (who is known as Tiernon in the Irish tradition) is thought to represent the Celtic god Tigernonos, ‘the great king’.

Gwent Is Coed is one of the Medieval Welsh cantrefs. It may be seen in the southeast corner of the map in the bookmark for page 3.