According to the accounts of Tacitus (Germ. 42), Paterculus (2.108), Pliny the Elder, and Strabo (vii. p. 290) they eventually moved into the large area that had been occupied by the Boii, specifically in a region already called "Baiohaemum", where their allies and fellow Suevi lived, the Quadi. It was described as being within the Hercynian Forest and was possibly in the region of modern Bohemia, but that is not certain. By 6 BC, their king, Maroboduus, had established a powerful kingdom there that Augustus perceived as a threat to the Roman Empire. Before he could act, however, the revolt in Illyria intervened. Eventually, Maroboduus was deposed and exiled by Catualda (AD 19). Catualda was, in turn, deposed by Vibilius of the Hermunduri that year and succeeded by the Quadian Vannius. Around 50 AD, Vannius was himself also deposed by Vibilius, in co-ordination with his nephews Vangio and Sido.