Topic summary
Gaulish language

Extracted from the Wikipedia article Gaulish.
Demise
Despite considerable Romanisation of the local material culture, the Gaulish language is held to have survived and coexisted with spoken Latin during the centuries of Roman rule of Gaul. Although the exact year of the Gaulish language's extinction is unknown, it is estimated to have occurred around the late 6th century AD. After c. 450, Gaulish begins to be mentioned in contexts where Latin has replaced "Gaulish" or "Celtic" (whatever the authors meant by those terms), though at first these only concerned the upper classes. For Galatia (Anatolia), there is no source explicitly indicating a 5th-century language replacement: