Cantrefs

Anglesey ( ), or ' (), is an island off the north-west coast of Wales. It forms the bulk of the county known in English as the Isle of Anglesey', which also includes Holy Island () and some islets and skerries. The county borders Gwynedd across the Menai Strait to the southeast, and is otherwise surrounded by the Irish Sea. Holyhead is the largest town, and the administrative centre is Llangefni.

thumb|right|Cantrefi of Medieval Wales A cantref ( ; ; plural cantrefi or cantrefs; also rendered as cantred) was a medieval Welsh land division, particularly important in the administration of Welsh law.

commote in Denbighshire, Wales

thumb|right|240px|A general map of Gwynedd showing the cantrefi. Rhufoniog is shown in the upper centre portion. Rhufoniog was a small sub-kingdom of the Dark Ages Gwynedd, and later a cantref in medieval Wales.

thumb|right|300px|Map of the Welsh cantrefs, showing the location of Buellt, in the middle thumb|right|300px|Buellt, 1797 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 Bryc

thumb|250px|Map of Welsh '''''' is a coastal and mountainous region of Wales. It has been a kingdom, a , a district and, as Merionethshire, a county. It is currently a committee area within the county Gwynedd.

thumb|250px|right|Post-Roman Welsh kingdoms. Dunoding is in the north-west, along the southern edge of the Llŷn Peninsula. The modern Anglo-Welsh border is also shown. Dunoding was an early sub-kingdom within the Kingdom of Gwynedd in north-west Wales which existed between the 5th and 10th centuries. According to tradition, it was named after Dunod, a son of the founding father of Gwynedd – Cunedda Wledig – who drove the Irish settlers from the area in c. 460. The territory existed as a subordinate realm within Gwynedd until the line of rulers descended from Dunod expired in c. 925. Following

Gwynllŵg was a kingdom of Medieval Wales and later a Norman lordship and then a cantref. It is named after Gwynllyw, its 5th century and 6th century ruler.

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.