AMBIORIX, prince of the Eburones, a tribe of Belgian Gaul. Although Caesar (q.v.) had freed him from paying tribute to the Aduatuci, he joined Catuvolcus (winter, 54 B.c.) in a rising against the Roman forces under Q. Titurius Sabinus and L. Aurunculeius Cotta, and almost annihilated them. An attack on Quintus Cicero (brother of the orator), then quartered with a legion in the territory of the Nervii, failed owing to the timely appearance of Caesar. Ambiorix is said to have found safety across the Rhine.
BIBLIOGRAPHY.—Caesar, Bell. Gall., V. 26-51, Vi. viii. 24; Dio Bibliography.—Caesar, Bell. Gall., V. 26-51, Vi. viii. 24; Dio Cassius xl. 7-11; Florus iii. so.