Celtic Britons
The Britons (also called Brythons) were the people who spoke a Celtic language known as Common Brittonic. They lived in Great Britain during the Iron Age, Roman Britain and the Sub-Roman period following the Romans' departure from Britain. Following the arrival of the Anglo-Saxons, who occupied most what is now the country of England, some of the Britons migrated to Wales, Cornwall and southern Scotland, while others moved to Armorica and renamed it Brittany. Those who remained were absorbed into Anglo-Saxon society.