 Proto-Germanic "*walha" is derived ultimately from the name of the Volcae, a Celtic tribe who lived first in the south of Germany and in central Europe and then migrated to Gaul.This means that English Gaul, despite its superficial similarity, is not actually derived from Latin "Gallia" (which should have produced "**Jaille" in French), though it does refer to the same ancient region.Celtic refers to a family of languages and, more generally, means "of the Celts" or "in the style of the Celts".