A group of tribes living in northern Gaul, between the English Channel and the west bank of the Rhine, from at least the 3rd century BC.
References
Pokorny, Julius, "The pre-Celtic inhabitants of Ireland", Celtic, DIAS, 1960 (reprint 1983), p. 231.
Etymology
From LatinBelgae, an Iron-Age European group of tribes located between the rivers Seine and Rhine, from Proto-Celtic*belg-, *bolg-(“to swell (with anger)”), from Proto-Indo-European*bʰelgʰ-(“to bulge, swell”), thus meaning "People who swell (with fury/anger). Also see Old English belgan and Dutch gebeld.