Ambiorix, one of the most famous of the Gallic chiefs who fought against Julius Caesar toward the middle of the first century B. C. Conjointly with the superannuated Cativolcus, he was ruling over the Eburones, on the lower Meuse, when the country was invaded by Caesar, who strove to corrupt him, but only made him dissemble while waiting his opportunity. During Caesar's second excursion to England, Ambi-orix organized an extensive conspiracy, which broke out after the Roman legions had gone into winter quarters. Having by stratagem induced one garrison to leave their fort, he massacred them to a man. He was about to attack another camp when Caesar marched to its relief, and easily dispersed the assailants. Cativolcus took poison, but Ambiorix, with a few friends, made his escape into the forests.