Antigonus II Gonatas (, ; – 239 BC) was a Macedonian Greek ruler who solidified the position of the Antigonid dynasty in Macedon after a long period defined by anarchy and chaos and acquired fame for his victory over the Gauls who had invaded the Balkans.
Birth and family Antigonus Gonatas was born around 320 BC. The origin of the Hellenistic nickname Gonatas is unknown. He was descended from the Diadochi (the successors of Alexander the Great) on both his father's and mother's side. His father was Demetrius Poliorcetes, himself the son of Antigonus I Monophthalmus, who then controlled much of Asia. His mother was Phila, the daughter of Antipater, who had controlled Macedonia and the rest of Greece since 334 BC and was recognized as regent of the empire, which in theory remained united. Cassander, Antipater's oldest son who would become King of Macedon in 305 BC, was his uncle. The year of Antigonus Gonatas' birth, however, Antipater died, leading to further struggles for territory and dominance.
The careers of Antigonus's grandfather Antigonus Monophthalmus and father showed great swings in fortune. After coming closer than anyone to reuniting the empire of Alexander, Antigonus Monophthalmus was defeated and killed in the great Battle of Ipsus in 301 BC and the territory he formerly controlled was divided among his enemies, Cassander, Ptolemy, Lysimachus, and Seleucus.
Demetrius’ general The fate of Antigonus Gonatas, now 18, was closely tied with that of his father Demetrius, who escaped from the battle with 9,000 troops. Jealousy among the victors eventually allowed Demetrius to regain part of the power his father had lost. He conquered Athens and in 294 BC he seized the throne of Macedonia from Alexander, the son of Cassander.
Because Antigonus Gonatas was the grandson of Antipater and the nephew of Cassander through his mother, his presence helped to reconcile the supporters of these former kings to the rule of his father.
In 292 BC, while Demetrius was campaigning in Boeotia, he received news that Lysimachus, the ruler of Thrace and the enemy of his father, had been taken prisoner by Dromichaetes, a ruler of the Getae. Hoping to seize Lysimachus' territories in Thrace and Asia, Demetrius delegated command of his forces in Boeotia to Antigonus and immediately marched north. While he was away, the Boeotians rose in rebellion, but were defeated by Antigonus, who bottled them up in Thebes.
After the failure of his expedition to Thrace, Demetrius joined his son at the Siege of Thebes. As the Thebans defended their city stubbornly, Demetrius often forced his men to attack the city at great cost, even though there was little hope of capturing it. It is said that, distressed by the heavy losses, Antigonus asked his father: "Why, father, do we allow these lives to be thrown away so unnecessarily?" Demetrius appears to have shown his contempt for the lives of his soldiers by replying: "We don't have to find rations for the dead." But he also showed a similar disregard for his own life and was badly wounded at the siege by a bolt through the neck.
In 291 BC, Demetrius finally took the city after using siege engines to demolish its walls. But control of Macedonia and most of Greece was merely a stepping stone to his plans for further conquest. He aimed at nothing less than the revival of Alexander's empire and started making preparations on a grand scale, ordering the construction of a fleet of 500 ships, many of them of unprecedented size.
Such preparations and the obvious intent behind them, naturally alarmed the other kings, Seleucus, Ptolemy, Lysimachus, and Pyrrhus, who immediately formed an alliance. In the spring of 288 BC Ptolemy's fleet appeared off Greece, inciting the cities to revolt. At the same time, Lysimachus attacked Macedonia from the east while Pyrrhus did so from the west. Demetrius left Antigonus in control of the rest of Greece, while he hurried to Macedonia.
By now the Macedonians had come to resent the extravagance and arrogance of Demetrius, and were not prepared to fight a difficult campaign for him. In 287 BC, Pyrrhus took the Macedonian city of Beroea and Demetrius's army promptly deserted and went over to the enemy who was much admired by the Macedonians for his bravery. At this change of fortune, Phila, the mother of Antigonus, killed herself with poison. Meanwhile, Athens revolted. Demetrius therefore returned and besieged the city, but he soon grew impatient and decided on a more dramatic course. Leaving Antigonus in charge of the war in Greece, he assembled all his ships and embarked with 11,000 infantry and all his cavalry to attack Caria and Lydia, provinces of Lysimachus.
As Demetrius was chased across Asia Minor to the Taurus Mountains by the armies of Lysimachus and Seleucus, Antigonus attained success in Greece. Ptolemy's fleet was driven off and Athens surrendered.
In the wilderness
In 285 BC, Demetrius, worn down by his fruitless campaign, surrendered to Seleucus. At this point, he wrote to his son and to his commanders in Athens and Corinth telling them to henceforth consider him a dead man and to ignore any letters they might receive written under his seal. Macedonia, meanwhile, had been divided between Pyrrhus and Lysimachus, but, "like two wolves sharing a piece of meat", they soon fought over it with the result that Lysimachus drove Pyrrhus out and took over the whole kingdom.
Following the capture of his father, Antigonus proved himself a dutiful son. He wrote to all the kings, especially Seleucus, offering to surrender all the territory he controlled and proposing himself as a hostage for his father's release, but to no avail. In 283 BC, at the age of 55, Demetrius died in captivity in Syria. When Antigonus heard that his father's remains were being brought to him, he put to sea with his entire fleet, met Seleucus's ships near the Cyclades, and took the relics to Corinth with great ceremony. After this, the remains were interred at the town of Demetrias that his father had founded in Thessaly.
In 282 BC, Seleucus declared war on Lysimachus and the next year defeated and killed him at the Battle of Corupedium in Lydia. He then crossed to Europe to claim Thrace and Macedonia, but Ptolemy Keraunos, the son of Ptolemy, murdered Seleucus and seized the Macedonian throne. Antigonus decided the time was ripe to take back his father's kingdom, but when he marched north, Ptolemy Keraunos defeated his army.
Ptolemy's success, however, was short-lived. In the winter of 279 BC, a great horde of Gauls under their leader Brennus descended on Macedonia from the north, crushed Ptolemy's army and killed him in battle, starting two years of complete anarchy in the kingdom. After plundering Macedonia, the Gauls invaded further regions of Greece, moving southwards. Antigonus cooperated in the defence of Greece against the barbarians, but the Aetolians took the lead in defeating the Gauls. In 278 BC a Greek army with a large Aetolian contingent checked the Gauls at Thermopylae and Delphi, inflicting heavy casualties and forcing them to retreat.
The next year (277 BC), Antigonus sailed to the Hellespont, landing near Lysimachia at the neck of the Thracian Chersonese. When an army of Gauls under the command of Cerethrius appeared, Antigonus laid an ambush. He abandoned his camp and beached his ships, then concealed his men. The Gauls looted the camp, but when they started to attack the ships, Antigonus's army appeared, trapping them with the sea to their rear. In this way Antigonus resoundingly won the Battle of Lysimachia strengthening his claim to the Macedonian throne. Around this time, under these favourable omens, Antigonus's niece-wife Phila gave birth to his son and successor, Demetrius II Aetolicus.
Conquering the Macedonian throne
Sosthenes, a Macedonian nobleman, had managed to check the Celts to a certain extent, but it was Antigonus who finally defeated them at Lysimachia and freed the Macedonians from years of terror, hardship and anarchy. As a son of Demetrius, who had ruled Macedon for several years, Antigonus had a legitimate claim to the Macedonian throne and now he was also seen as its savior.Robin Waterfield, Antigonus, pp 118–119.
After his victory over the Celts, Antigonus marched towards Macedon and had to fight his way into the country for others were still contending for the throne. First Antigonus defeated Antipater Etesias, a nephew of Cassander, he then drove Ptolemy Epigonos, a son of Lysimachus and Arsinoe, from the country. There were other pretenders, an Alexander and an Arrhidaeus, who might have been the same person. After defeating these, the final problem facing Antigonus was Apollodorus the tyrant of Cassandreia.Robin Waterfield, Antigonus, pp 119–120.
Antigonus besieged Cassandreia for ten months, but was unable to dislodge Apollodorus and his men. Antigonus then resorted to trickery, he retreated his army and sent one of his mercenary commanders, Ameinias the Phocian, to negotiate with Apollodorus. During the negotiations Ameinias had 2,000 of his men launch a surprise attack on the city with specially prepared ladders of the right height, they gained possession of the walls and summoned Antigonus. By the end of 276 BC Antigonus had gained control of most of Macedon.Robin Waterfield, Antigonus, pp 120–121.
King of Macedonia
Antigonus against Pyrrhus
Pyrrhus, king of Epirus, Macedonia's western neighbour, was a general of mercurial ability, widely renowned for his bravery, but he did not apply his talents sensibly and often snatched after vain hopes, so that Antigonus used to compare him to a dice player, who had excellent throws, but did not know how to use them. When the Gauls defeated Ptolemy Ceraunus and the Macedonian throne became vacant, Pyrrhus was occupied in his campaigns overseas. Hoping to conquer first Italy and then Africa, he got involved in wars against Rome and Carthage, the two most powerful states in the western Mediterranean. He then lost the support of the Greek cities in Italy and Sicily by his haughty behaviour. Needing reinforcements, he wrote to Antigonus as a fellow Greek king, asking him for troops and money, but Antigonus politely refused. In 275 BC, the Romans fought Pyrrhus at the Battle of Beneventum which ended inconclusively, although many modern sources wrongly state that Pyrrhus lost the battle. Pyrrhus had been drained by his recent wars in Sicily, and by the earlier "Pyrrhic victories" over the Romans, and thus decided to end his campaign in Italy and return to Epirus.
Pyrrhus's retreat from Italy, however, proved very unlucky for Antigonus. Returning to Epirus with an army of eight thousand foot and five hundred horse, he was in need of money to pay them. This encouraged him to look for another war, so the next year, after adding a force of Gallic mercenaries to his army, he invaded Macedonia with the intention of filling his coffers with plunder. The campaign, however, went better than expected. Making himself master of several towns and being joined by two thousand deserters, his hopes started to grow and he went in search of Antigonus, attacking his army in a narrow pass and throwing it into disorder at the Battle of the Aous River. Antigonus's Macedonian troops retreated, but his own body of Gallic mercenaries, who had charge of his elephants, stood firm until Pyrrhus's troops surrounded them, whereupon they surrendered both themselves and the elephants. Pyrrhus now chased after the rest of Antigonus's army which, demoralised by its earlier defeat, declined to fight. As the two armies faced each other, Pyrrhus called out to the various officers by name and persuaded the whole body of infantry to desert. Antigonus escaped by concealing his identity. Pyrrhus now took control of upper Macedonia and Thessaly, while Antigonus held on to the coastal towns.