The Kingdom of Gwynedd was a Welsh kingdom and a Roman Empire successor state that emerged in sub-Roman Britain in the 5th century during the Anglo-Saxon settlement of Britain.
Cefnllys Castle was a medieval spur castle in Radnorshire, Wales. Two successive masonry castles were built on a ridge above the River Ithon known as Castle Bank in the thirteenth century, replacing a wooden motte-and-bailey castle constructed by the Normans nearby. Controlling several communication routes into the highlands of Mid Wales, the castles were strategically important within the Welsh Marches during the High Middle Ages. As the seat of the fiercely contested lordship and cantref of Maelienydd, Cefnllys became a source of friction between Llywelyn ap Gruffudd and Roger Mortimer in the prelude to Edward I's conquest of Wales (1277–1283). Cefnllys was also the site of a borough and medieval town.
Maelienydd, sometimes spelt Maeliennydd, was a cantref and lordship in east central Wales covering the area from the River Teme to Radnor Forest and the area around Llandrindod Wells. The area, which is mainly upland, is now in Powys. During the Middle Ages it was part of the region known as Rhwng Gwy a Hafren and its administrative centre was at Cefnllys Castle.
Kerry is a village and geographically large community in Montgomeryshire, Powys, Wales.
Gwent was a medieval Welsh kingdom, lying between the Rivers Wye and Usk. It existed from the end of Roman rule in Britain in about the 5th century until the Norman invasion of Wales in the 11th century. Along with its neighbour Glywyssing, it seems to have had a great deal of cultural continuity with the earlier Silures, keeping their own courts and diocese separate from the rest of Wales until their conquest by Gruffydd ap Llywelyn. Although it recovered its independence after his death in 1063, Gwent was the first of the Welsh kingdoms to be overrun following the Norman conquest.
Cwmhir Abbey, near Llandrindod Wells in Powys, is a Welsh Cistercian monastery founded in 1176 by Cadwallon ap Madog. A spurious tale was later recorded that the abbey was founded in 1143 by Meredudd ap Maelgwn at Ty-faenor, and then refounded at the present location near the village of Abbeycwmhir in 1176. There does appear to be a site movement from Ty-faenor, but Maredudd ap Maelgwn was prince of Maelienydd in 1215 under Prince Llywelyn ab Iorwerth of Gwynedd, who then controlled the district. The later charter to the abbey in 1215 caused the confusion and led to the belief that Maredudd had founded the abbey in 1143.
Cynllibiwg was evidently a place name in early medieval Wales.
Gwrtheyrnion or Gwerthrynion was a commote in medieval Wales, located in Mid Wales on the north side of the River Wye; its historical centre was Rhayader. It is said to have taken its name from the legendary king Vortigern. For most of the medieval era, it was associated with the cantref of Buellt and then Elfael, small regional kingdoms whose rulers operated independently of other powers. In the Norman era, like the rest of the region between Wye and Severn it came to be dominated by Marcher Lordships.
Cadwallon ap Madog was the son of Madog ab Idnerth who had died in 1140, while Idnerth was a grandson of Elystan Glodrydd who had died in around 1010 and had founded a dynasty in the Middle Marches of Wales, in the area known as Rhwng Gwy a Hafren.
Ial or Yale was a commote of medieval Wales within the cantref of Maelor in the Kingdom of Powys. When the Kingdom was divided in 1160, Maelor became part of the Princely realm of Powys Fadog, and belonged to the Royal House of Mathrafal.
Elfael was one of a number of Welsh cantrefi occupying the region between the River Wye and river Severn, known as Rhwng Gwy a Hafren, in the early Middle Ages. It was divided into two commotes, Is Mynydd and Uwch Mynydd, separated by the chain of hills above Aberedw. In the late medieval period, it was a marcher lordship. However, after the Laws in Wales Act of 1535, it was one of the territorial units which went to make up the county of Radnorshire in 1536.
Elystan Glodrydd, also known as "Æthelstan the Famous" and "The Renowned," was, according to Welsh genealogical tracts, the founder of the fifth Royal Tribe of Wales. He was the Prince of Buellt, and later also of Fferreg ; in the century after his death, Fferreg split into Maelienydd and Elfael
The history of Gwynedd in the High Middle Ages is a period in the History of Wales spanning the 11th through the 13th centuries. Gwynedd, located in the north of Wales, eventually became the most dominant of Welsh polities during this period. Contact with continental courts allowed for Gwynedd to transition from a petty kingdom into an increasingly sophisticated principality of seasoned courtiers capable of high level deplomacy and representation; not only with the Angevine kings, but also the king of France and the Papal See. Distinctive achievements in Gwynedd include further development of Medieval Welsh literature, particularly poets known as the Beirdd y Tywysogion associated with the court of Gwynedd; the reformation of bardic schools; and the continued development of Cyfraith Hywel. All three of these further contributed to the development of a Welsh national identity in the face of Anglo-Norman encroachment of Wales.
Cwmdauddwr is a village in Powys, Wales. It is contiguous with the town of Rhayader on the opposite side of the River Wye. The village is located on the B4518 road linking Rhayader with the Elan Valley Reservoirs.
Arwystli was a cantref in mid Wales in the Middle Ages, located in the headland of the River Severn. It was chiefly associated with the Kingdom of Powys, but was heavily disputed between Powys, Gwynedd, and the Norman Marcher Lords for hundreds of years, and was the scene of many skirmishes between those groups. Like many other cantrefs and subdivisions, it was divided up by the Laws in Wales Acts in the 16th century.
Buellt or Builth was a cantref in medieval Wales, located west of the River Wye. Unlike most cantrefs, it was not part of any of the major Welsh kingdoms for most of its history, but was instead ruled by an autonomous local dynasty. During the Norman era it was associated with Rhwng Gwy a Hafren, a region independent of the Welsh monarchies and controlled by Norman Marcher Lords. In the 16th century, it was reorganized as a hundred and joined with the former kingdom of Brycheiniog to form the county of Brecknockshire.
Cedewain was a medieval cantref in the Kingdom of Powys. It possibly consisted of the commotes (cymydau) of Cynan, Hafren and Uwch Hanes. Other sources give the commotes as Cedewain, Eginlle and Ceri.
Rhayader Castle is the remains of a motte-and-bailey castle in the town of Rhayader, Powys, Wales. The available documentary sources are not clear enough to distinguish between this site and the castle mound across the river and one or the other was probably built by Rhys ap Gruffydd, Prince of Deheubarth, in 1177. At that time the river formed the border between Gwrtheyrnion and the independent state of Buellt; the town of Rhayader is on the Gwrtheyrnion side of the river.
Dinieithon was a commote within the cantref of Maelienydd, in the medieval region of Rhwng Gwy a Hafren in Wales. It was situated near the modern town of Llandrindod Wells.
Cantref Coch was a cantref associated with the kingdoms of Ergyng, Gwent and the later Kingdom of Glamorgan. Its area is defined as the land between the River Severn and the River Wye, with the Severn Sea as its southern border although its northern border is less certain. Cantref Coch is one of the few medieval cantrefi named by Welsh writers that is not within the modern nation of Wales.
