The terms, "Upper Germania" and "Lower Germania" do not appear in the "Gallic Wars" of Julius Caesar, yet he writes about reports that the people who lived in those regions were referred to as "Germani" locally, a term used for a tribe that the Romans called the Germani Cisrhenani, and that the name Germania seems to have been adopted to designate other indigenous tribes in the area. Lower Germania was occupied by the Belgae. Upper Germania was occupied by Gaulish tribes including the Helvetii, Sequani, Leuci, and Treveri, and, on the north bank of the middle Rhine, the remnant of the Germanic troops that had attempted to take Vesontio under Ariovistus, but who were defeated by Caesar in 58 BC.