Before 1066 and the advent of the Normans, Wales had been the domain of some of the earliest settlers of the British Isles – the Britons or Celts – who are generally thought to have migrated from Continental Europe some three centuries before the birth of Christ. Anglo-Saxon conquerors had pushed these communities westwards out of England from the fifth century AD onwards, and they became known as the ‘Wallenses’ (literally the ‘borderers’). Early medieval Wales consisted of a complex patchwork of determinedly independent, rival provinces and realms, with three major principalities – Gwynedd, Powys and Deheubarth – coming to prominence.
Thomas Asbridge in The Greatest Knight