Demetrius in Harpers Dictionary of Classical Antiquities

Son of Philip III., of Macedonia, an excellent prince, greatly beloved by his countrymen, and sent by his father as a hostage to Rome, where he also made many friends. He was subsequently liberated, and not long after paid a second visit to the capital of Italy as an ambassador from Philip, on which occasion he obtained favourable terms for his father, when the latter was complained of to the Roman Senate by the cities of Greece. Returning home loaded with marks of distinction from the Romans, and honoured by the Macedonians themselves, who regarded him as the liberator of their country, he excited the jealousy of his own father and the envy and hatred of his brother Perses. The latter eventually accused him of aspiring to the crown, and of carrying on, for this purpose, a secret correspondence with the Romans. Philip, lending too credulous an ear to the charge, put his son Demetrius to death, and only discovered when too late the utter falsity of the accusation (Liv.xxxiii. 30; xxxix. 35 foll.; xl. 5, 24Liv., 54 foll.). 4.