King of Macedon in the context of "Andriscus of Macedon"

Macedonia (Latin: Macedonia; Ancient Greek: Μακεδονία) was a province of ancient Rome, encompassing the territory of the former Antigonid Kingdom of Macedonia, which had been conquered by the Roman Republic in 168 BC at the conclusion of the Third Macedonian War. The province was created in 146 BC, after the Roman general Quintus Caecilius Metellus defeated Andriscus of Macedon, the last self-styled King of Macedonia in the Fourth Macedonian War. The province incorporated the former Kingdom of Macedonia with the addition of Epirus, Thessaly, and parts of Illyria, Paeonia and Thrace.

During the Republican period, the province was of great military significance, as the main bulwark protecting the Aegean region from attacks from the north. The Via Egnatia, which crossed the province from west to east was of great strategic importance, providing the main overland link between Rome and its domains in the Eastern Mediterranean. In this period, campaigns against the Dardani and Scordisci to the north and the Thracians to the east were nearly constant. By the first century BC, the province notionally extended to the Danube.

Andriscus (Ancient Greek: Ἀνδρίσκος, Andrískos; fl. 154/153 BC – 146 BC), also often referenced as Pseudo-Philip, was a Greek pretender who became the last independent king of Macedon in 149 BC as Philip VI (Ancient Greek: Φίλιππος, Philipos), based on his claim of being Philip, a now-obscure son of the last legitimate Macedonian king, Perseus. His reign lasted just one year and was toppled by the Roman Republic during the Fourth Macedonian War.

Ancient sources generally agree that he was originally a fuller from Adramyttium in Aeolis in western Anatolia. Around 153 BC, his ancestry was supposedly revealed to him, upon which he travelled to the court of his claimed uncle, the Seleucid monarch Demetrius I Soter, to request assistance in claiming his throne. Demetrius refused and had him sent to Rome, where he was judged harmless and exiled to a city in Italy; he managed to escape, and after gathering support, primarily from Thrace, he launched an invasion of Macedon, defeating Rome's clients and establishing his rule as king. The Romans naturally reacted militarily, triggering war; after some initial successes, Andriscus was defeated and captured by the praetor Quintus Caecilius Metellus Macedonicus, who subdued Macedon once again.

The Battle of Sellasia took place during the summer of 222 BC between Macedon and the Achaean League, led by Antigonus III Doson, and Sparta under the command of King Cleomenes III. The battle was fought at Sellasia on the northern frontier of Laconia and ended in a Macedonian-Achaean victory.

In 229 BC, Cleomenes initiated hostilities against the Achaean League, the dominant power of the Peloponnese. In a series of campaigns, Cleomenes was successful in defeating the Achaeans, making Sparta the main regional power. This prompted the chief figure of the Achaean League, Aratus of Sicyon, to approach the King of Macedon, Antigonus III Doson, for military assistance. The Macedonians acquiesced on the terms that the Achaean surrender the formidable fortress of Acrocorinth to them. The Macedonians invaded the Peloponnese in 224 BC at the head of a Greek alliance and by 222 BC managed to hem Cleomenes in Laconia.