In pre-Roman Gaul the Belgic tribe of the Veliocasses or Velocasses controlled a large area in the lower Seine valley, which retains a trace of their name, as the Vexin, in 52 they raised 3000 men to support which son of Celtillus the Avernian, leader of the Gallic tribes?
Vercingetorix Vercingetorix was the son of Celtillus the Avernian, leader of the Gallic tribes. Vercingetorix came to power after his formal designation as chieftain of the Arverni at the oppidum Gergovia in 52 BC. He immediately established an alliance with other Gallic tribes, took command and combined all forces, and led them in the Celts' most significant revolt against Roman power. He won the Battle of Gergovia against Julius Caesar in which several thousands Romans and allies died and Caesar's Roman legions withdrew.
Abrincatui The Abrincatui were a Gallic tribe (Plin. iv. 18), not mentioned by Julius Caesar, whose frontier was near the Curiosolites. Their town Ingena, called "Abrincatae" in the Notitia dignitatum, has given its name to the modern Avranches; and their territory would probably correspond to the division of Avranchin. The Abrincatui became a client tribe of the Venelli until the Roman occupation in BC 49, when they were separated.