The Suevi, then Suebi and in the 6th century also Suavi (Jordanes, Procopius) were a large group of people who lived in Germania and were first mentioned by Julius Caesar in connection with Ariovistus' campaign in Gaul, c. 58 BC. While Caesar treated them as one Germanic tribe, though the largest and most warlike, later authors such as Tacitus, Pliny and Strabo specified that the Suevi "do not, like the Chatti or Tencteri, constitute a single nation.