The Roman province of Macedonia (, ) was officially established in 146 BC, after the Roman general Quintus Caecilius Metellus defeated Andriscus of Macedon, the last self-styled King of the ancient kingdom of Macedonia in 148 BC, and after the four client republics (the "tetrarchy") established by Rome in the region were dissolved. The province incorporated ancient Macedonia, with the addition of Epirus, Thessaly, and parts of Illyria, Paeonia and Thrace. This created a much larger administrative area, to which the name of 'Macedonia' was still applied. The Dardanians, to the north of the Paeonians, were not included, because they had supported the Romans in their conquest of Macedonia.