British (historic)

The Britons, also known as Celtic Britons or Ancient Britons, were Celtic people who inhabited Great Britain from the British Iron Age into the Middle Ages, at which point their culture and language diverged into the modern Welsh, Cornish and Bretons (among others). They spoke the Common Brittonic language, the ancestor to the modern Brittonic languages.

The traditional view that the Celtic Britons originally migrated from the continent, mostly across the English Channel, with their languages, culture and genes in the Iron Age has been considerably undermined in recent decades by the contention of many scholars that Celtic languages had instead spread north along the Atlantic seaboard during the Bronze Age, and the results of genetic studies, which show a large continuity between Iron Age and older British populations, suggesting trans-cultural diffusion was also very important in the introduction of the Celtic languages.

The earliest evidence for the Britons and their language in historical sources dates to the Iron Age. After the Roman conquest of Britain in the 1st century, a Romano-British culture emerged, and Latin and British Vulgar Latin coexisted with Brittonic. During and after the Roman era, the Britons lived throughout Britain. Their relationship with the Picts, who lived north of the Firth of Forth, has been the subject of much discussion, though most scholars now accept that the Pictish language was related to Common Brittonic, rather than a separate Celtic language.

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