Agis III

Agis III (Greek: Ἄγις, died 331 BC) was the eldest son of Archidamus III, and the 21st Eurypontid king of Sparta between 338 and 331 BC. He tried to lead a revolt against Macedonian hegemony over Greece, but was defeated by Antipater—Alexander the Great's regent in Greece—at the Battle of Megalopolis in 331 BC, where he died.