Eurydice II of Macedon spouse Philip III of Macedon
Queen of Macedon
The sources are again silent as to Eurydice during the life of Perdiccas. After his death in 321 BC, Eurydice, likely still a teenager, again bid for power: she demanded that the new regents of Macedon, Peithon and Arrhidaeus, grant her a share of the regency.  Eurydice established herself as the representative of the legitimate line of succession, due to her descent from Philip II and Perdiccas and marriage to Philip III. Her ties to the Macedonian army, and her status as king's wife, helped her gain influence and succeeded briefly in becoming a sort of de facto regent.  While she may have not actively fought, she regularly spoke to the troops in military attire. She took an active part in the proceedings at the Treaty of Triparadisus in 321 BC.
It was at this point, however, that a new adversary, Alexander the Great's general Antipater, returned to the king's court and laid claim to the vacant regency.  In an attempt to forestall this and retain command over the Macedonian army, Eurydice spoke in public to the assembled soldiery, who were restless due to Antipater's inability to pay them. Eurydice's speech failed; the Macedonian army decided in favor of Antipater, and the general was appointed regent and guardian of the king.Eurydice, once again relatively powerless, accompanied her husband and Antipater to Macedon. But the death of Antipater in 319 BC, the more feeble character of Polyperchon, who succeeded him as regent, and the failure of his enterprises in Greece, and above all, the favourable disposition he evinced towards Olympias, determined her again to take an active part: she concluded an alliance with Cassander. 
In 317, she deposed Polyperchon. It is possible that she appointed Cassander regent, but she often acted as regent herself. However, Polyperchon joined forces with Olympias. As Cassander was still fighting in Peloponnese, Eurydice  assembled an army and took the field in person. Polyperchon advanced against her from Epirus, accompanied by Aeacides, the king of that country, Olympias, Roxana and the young Alexander IV of Macedon. But the presence of Olympias was alone sufficient to decide the contest: the Macedonian troops refused to fight against the mother of Alexander the Great, and went over to her side. Eurydice fled from the field of battle to Amphipolis, but was seized and made prisoner.
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