Philip V was one of the last great Macedonian sovereigns ruling from 221 to 179, whose attempt to extend Macedonian influence throughout Greece, resulted in his defeat by Rome.
Philip became king when his father died in 229 BC. He was just nine years old then, and real power lay in the hands of his cousin, Antigonus Dosun, the regent. Antigonus later declared himself to be the king but he died when Philip was just seventeen. So in effect, Philip became king only in 221.
Philip’s reign witnessed an expansion of Macedonian power, but it also saw an even greater expansion of the power of Rome. During his reign he was preoccupied with 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.
Philip devoted the last decade of his life to consolidating his kingdom. He reorganized finances, transplanted, populations, reopened mines, and issued central and local currencies. He was succeeded by his eldest son, Perseus who ruled as the last king of Macedon.