Continental Celtic languages

The Continental Celtic languages are the now-extinct group of the Celtic languages that were spoken on the continent of Europe and in central Anatolia, as distinguished from the Insular Celtic languages of the British Isles and Brittany. Continental Celtic is mostly a geographic, rather than strictly linguistic, grouping of the ancient Celtic languages. These languages were spoken by the people known to Roman and Greek writers as the Keltoi, Celtae, Galli, and Galatae. They were spoken in an area arcing from the northern half of Iberia in the west to north of Belgium, and east to the Carpathian basin and the Balkans as Noric, and in inner Anatolia (modern day Turkey) as Galatian. Even though Breton has been spoken in Continental Europe since at least the 6th century AD, it is not considered one of the Continental Celtic languages, as it is a Brittonic language, like Cornish and Welsh. A Gaulish substratum in Breton has been suggested, but that is debated.