Kingdom of Morgannwg
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.{{cite book|first=Thomas|last=Charles-Edwards|title=Wales and the Britons 350–106|page=144|publisher=Oxford University Press|location=Oxford, UK|year=2013|isbn=978-0-19-821731-2}}{{cite book|last=Davies |first=Wendy |title=An Early Welsh Microcosm: Studies in the Llandaff Charters|authorlink=Wendy Davies |page=91|publisher=Royal Historical Society |location =London, UK |year=1978|isbn=978-0-901050-33-5}} Glywysing was called Morgannwg (now Glamorgan) from the end of the tenth century.{{cite book|last= Sims-Williams|first=Patrick |authorlink=Patrick Sims-Williams |title= The Book of Llandaff as a Historical Source|page=117|publisher=The Boydell Press |location =Woodbridge, UK |year=2019|isbn=978-1-78327-418-5}}
= Norman conquest =
{{Main|Glamorgan}}
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.Ashley, Mike (1998) The Mammoth Book of British Kings and Queens (Carol & Graf)
The name Morgannwg is still used in Wales for the former Marcher Lordship and county of Glamorgan (itself a corruption of the term Gwlad Morgan) and its successor counties