High Quality Content by WIKIPEDIA articles! Antigonus I Monophthalmus ("Antigonus the One-eyed", 382 BC - 301 BC) son of Philip from Elimeia, was a Macedonian nobleman, general, and satrap under Alexander the Great. During his early life he served under Philip II, and he was a major figure in the Wars of the Diadochi after Alexander's death, declaring himself king in 306 BC and establishing the Antigonid dynasty.