Demetrius II of Macedon was a king who ruled from 239 to 229 BC. He was the son of Demetrius I of Macedon and Phila, and he came to power during a turbulent time in Macedonian history. His reign was marked by conflicts with rival factions and external threats, particularly from the Aetolian League and Epirus. During his rule, Demetrius II faced challenges in maintaining control over his kingdom. He sought to strengthen his position through military campaigns and alliances. However, his reign ended when he was defeated and killed in battle, leading to a period of instability in Macedon.