The Info List - Morgannwg

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was, from the sub-Roman period to the Early Middle Ages, a petty kingdom in south-east Wales. Its people were descended from the Iron Age tribe of the Silures.


1 Name 2 Location 3 Morgannwg 4 See also 5 References

Name[edit] Glywysing
is said to be named after Glywys, a real or legendary early monarch, whose name may continue that of the Romano-British *Glevenses, the territory and citizens of Glevum
(modern Gloucester).[2] According to 12th-century sources, after the death of Glywys, the kingdom was divided into seven cantrefs named for his sons:[3] Cydweli, Gwyr, Margam, Penychen, Gwynllwg, Gorfynydd, and another. These were typically ruled together by the head of the family and sometimes treated as appenage subkingdoms. Location[edit] The borders changed over time, but it is generally thought that its lands originally lay between the Afon Llwyd
Afon Llwyd
and the River Towy. At times they expanded eastwards to encompass both Gwent and Ergyng, but some time before the early 8th century, Cydweli
and Gwyr
(Gower) were lost to Dyfed. Today the area of Glywysing
is known as Glamorgan. Morgannwg[edit] In the mid 10th century, the kingdom merged with Gwent and changed its name to Morgannwg
or Gwlad Morgan in honour of King Morgan the Old (r. 942–74)[citation needed] or his ancestor King Morgan the Generous (fl. c. 730).[4] Glywysing
seems to have been a sub-kingdom or principality of the Kingdom of Morgannwg, along with Gwent. After the death of Morgan the Old, Gwent and Glywysing
were separated again from 974 to 1055, but Glywysing
alone was often referred to as Morgannwg. Both areas were conquered by Gruffydd ap Llywelyn
Gruffydd ap Llywelyn
in about 1055, but on his death in 1063, Morgannwg, the union between Gwent and Glywysing, was reconstituted. How this occurred is unclear; possibly the Kings of Glywysing
Kings of Glywysing
were also Kings of Morgannwg
and the Kings of Gwent were semi-independent under-Kings. The last native ruler of these areas was Iestyn ap Gwrgan, King of Morgannwg
(1081-1090), who was deposed by Robert Fitzhamon. The name Morgannwg
is still used in Wales
for the former county of Glamorgan
(itself a corruption of the term Gwlad Morgan) and its successor counties. See also[edit]

Kings of Glywysing


^ The three cantrefs composing Glywysing
were based at Allt Wynllyw on Stow Hill
Stow Hill
(modern Newport); Nant Pawl; and Llaniltud Fawr. These were sometimes independent and sometimes controlled one another. Cf. The History Files: "Celtic Kingdoms of the British Isles: Cernyw / Glywyssing" (Accessed 14 Feb 2013). ^ Koch, John T. Celtic culture: a historical encyclopedia ABC-CLIO Ltd (15 Mar 2006) ISBN 978-1-85109-440-0 p.1312 ^ Carver, Martin The cross goes north: processes of conversion in northern Europe, AD 300-1300 Boydell Press; New edition (26 Jan 2006) ISBN 978-1-84383-125-9 p.125 ^ Lloyd, John E. A History of Wales
from the Earliest Times to the Edwardian Conquest, Vol. 1, p. 274. Longmans, Green, & Co. (London), 1911. Accessed 22 Feb 2013.

v t e

Medieval Welsh kingdoms

Brycheiniog Ceredigion

Seisyllwg Region–Gower Region–Ystrad Tywi

Dogfeiling Dunoding Dyfed Ergyng



Gorfynydd Gwynllwg Penychen

Gwent Gwynedd Meirionnydd Pengwern Powys


Rhos Region–Rhwng Gwy a Hafren

Region–Buellt Elfael Gwrtheyrnion Maelienydd

Tegeingl Brycheiniog


Deheubarth Gwent Gwynedd Powys

Wenwynwyn Fadog