The Fourth Macedonian War (150–148 BC) was the final war between Rome and Macedon. It came about as a result of the pretender Andriscus's usurpation of the Macedonian throne, pretending to be the son of Perseus, the last King of Macedon, deposed by the Romans after the Third Macedonian War in 168 BC. Andriscus, after some early successes, was eventually defeated by the Roman general Quintus Caecilius Metellus Macedonicus at the Battle of Pydna in 148 BC. Two years later Macedonia became a Roman province.