The Antigonid Dynasty was a royal family that ruled over parts of ancient Greece and Macedonia after the death of Alexander the Great in 323 BCE. Founded by Antigonus I Monophthalmus, the dynasty emerged from the conflicts known as the Diadochi Wars, where various generals fought for control of Alexander's vast empire. The Antigonids established their power primarily in Macedonia and sought to maintain control over the Greek city-states. The dynasty lasted until 168 BCE, when it was defeated by the Roman Republic during the Battle of Pydna. The Antigonid rulers, including notable figures like Demetrius I and Philip V, were known for their military prowess and attempts to unify Greece under their rule. Their legacy is significant in the context of Hellenistic history and the eventual rise of Roman influence in the region.