(306–168) Ruling house of ancient Macedonia.
Achaean and Aetolian leagues. Antigonus III (d. 221) reestablished the Hellenic Alliance, restoring Macedonia to a strong position in Greece. Under {{link=Philip">Philip V , Macedonia first clashed with Rome, in 215. Philip's defeat upset the old balance of power, and Rome became the decisive force in the eastern Mediterranean. The defeat of his successor, Perseus , at Pydna in 168 BC marked the end of the dynasty.