The Brittonic languages (also Brythonic or British Celtic; Welsh: ieithoedd Brythonaidd/Prydeinig; Cornish: yethow brythonek/predennek; and Breton: yezhoù...

Southwestern Brittonic languages (Breton: Predeneg ar mervent, Cornish: Brythonek Dyghowbarthgorlewin) are the Brittonic Celtic languages spoken in what...

The Gallo-Brittonic languages, also known as the P-Celtic languages, are a subdivision of the Celtic languages of Ancient Gaul (both celtica and belgica)...

or languages. Pictish is linked, likely as a sister language or a descendant branch. Evidence from early and modern Welsh shows that Common Brittonic was...

Western Brittonic languages (Welsh: Brythoneg Gorllewinol) comprise two dialects into which Common Brittonic split during the Early Middle Ages; its counterpart...

differences between the Goidelic and Brittonic languages arose after these split off from the Continental Celtic languages. Other scholars (such as Schmidt...

and Bretons (among others). They spoke Common Brittonic, the ancestor of the modern Brittonic languages. The earliest written evidence for the Britons...

Brittonic languages of Scotland survive to the modern day, though they have been reconstructed to a degree. The ancestral Common Brittonic language was...

Pictish is an extinct Brittonic Celtic language spoken by the Picts, the people of eastern and northern Scotland from Late Antiquity to the Early Middle...

Cumbric was a variety of the Common Brittonic language spoken during the Early Middle Ages in the Hen Ogledd or "Old North" in what is now the counties...