Kingdom of Morgannwg: Map & History

History of Morgannwg

In the early ninth century, south-east Wales was a kingdom called Gwent, but for periods in the ninth and tenth centuries it was separated into Glywysing in the west and Gwent (now Monmouthshire) in the east, with Glywysing having a higher status. Glywysing was called Morgannwg (now Glamorgan) from the end of the tenth century.

With Gwent increasingly overrun by the Norman conquest of Wales, the last native King of Morgannwyg was Iestyn ap Gwrgan (1081–1090), who was subsequently deposed by Robert Fitzhamon. Iestyn's sons became Lords of Afan, while Owain ap Caradog ap Gruffudd contented himself with Gwynllwg and founded the line of the Lords of Caerleon.