1911 Encyclopædia Britannica/Philip V., king of Macedonia
PHILIP V., king of Macedonia, son of Demetrius II. and Chryseis, was an infant at his father’s death in 230–229. His cousin, Antigonus Doson, administered the kingdom as regent till his death in 221–220, when Philip was eighteen years old Philip now ascended the throne and reigned till 179. His reign was occupied in the vain struggle to maintain the old Macedonian supremacy in the Balkan Peninsula, which became hopeless after the intervention of Rome and the decisive battle of Cynoscephalae (197). See Rome: History, § II. “The Republic” (period B, § b). (E. R. B.)