Medieval Wales

Wales in the Middle Ages covers the history of the region that is now called Wales, from the departure of the Romans in the early fifth century, until the annextion of Wales into the Kingdom of England in the early sixteenth century.

When the Roman garrison of Britain was withdrawn in 410, the various British states were left self-governing. Evidence for a continuing Roman influence after the departure of the Roman legions is provided by an inscribed stone from Gwynedd dated between the late 5th and mid-6th centuries commemorating a certain Cantiorix who was described as a citizen (cives) of Gwynedd and a cousin of Maglos the magistrate (magistratus). There was considerable Irish colonisation in Dyfed, where there are many stones with ogham inscriptions. Wales had become Christian under the Romans, and the "age of the saints" (approximately 500–700) was marked by the establishment of monastic settlements throughout the country, by religious leaders such as Saint David, Illtud and Saint Teilo.

One of the reasons for the Roman withdrawal was the pressure put upon the empire's military resources by the incursion of barbarian tribes from the east. These tribes, including the Angles and Saxons, who later became the English, were unable to make inroads into Wales except possibly along the Severn Valley as far as Llanidloes. However they gradually conquered eastern and southern Britain. At the Battle of Chester in 616, the forces of Powys and other British kingdoms were defeated by the Northumbrians under Æthelfrith, with king Selyf ap Cynan among the dead. It has been suggested that this battle finally severed the land connection between Wales and the kingdoms of the Hen Ogledd ("Old North"), the Brittonic-speaking regions of what is now southern Scotland and northern England, including Rheged, Strathclyde, Elmet and Gododdin, where Old Welsh was also spoken. From the 8th century on, Wales was by far the largest of the three remnant Brittonic areas in Britain, the other two being the Hen Ogledd and Cornwall.

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