Antigonus III Doson ((Greek Αντίγονος Δώσων 263
BC-221 BC) was king of Macedon from 229 BC-221 BC.
He belonged to the Antigonid dynasty.
Antigonus was the nephew of Antigonus II Gonatas.
On the death of Demetrius II of Macedon (229 BC),
Antigonus became guardian of Demetrius II's son,
Philip. In 227 BC Antigonus married widow of
Demetrius II, Phthia, deposing the young Philip, and
Antigonus supported Aratus of Sicyon and the
Achaean League against Aetolian League and Cleomenes
III, king of Sparta. Antigonus defeated Cleomenes
III in Battle of Sellasia, 222 BC. Antigonus died
during a battle against the Illyrians. He died when
one of his veins burst as he was shouting support
for his men.
Macedon 229–221 BC