Tags: Monarch.
Philip III Arrhidaeus (Ancient Greek: Φίλιππος Γ’ ὁ Ἀρριδαῖος; c. 359 BC – December 25 317 BC) was a Greek king of Macedon from after June 11 323 BC until his death. He was a son of King Philip II of Macedonia by Philinna of Larissa allegedly a Thessalian dancer and a half-brother of Alexander the Great. Named Arrhidaeus at birth he assumed the name Philip when he ascended to the throne.As Arrhidaeus grew older it became apparent that he had mild learning difficulties.