Eurydice III of Macedon

Eurydice (Greek: Εὐρυδίκη Eurydike; died 317 BC) was the Queen of Macedonia, daughter of Amyntas IV, son of Perdiccas III, and Cynane, daughter of Philip II and his first wife Audata. She was a significant person in the immediate aftermath of the death of Alexander the Great and the First and Second Wars of the Diadochi.

Eurydice's birth name appears to have been Adea; the sources are silent on when it was changed to Eurydice. She was brought up by her mother Cynane, and seems to have been trained by her mother in masculine and martial exercises.

She accompanied her mother on her daring expedition to Asia; and when Cynane was put to death by Alcetas, the discontent expressed by the troops, and the respect with which they looked on Eurydice as one of the surviving members of the royal house, induced the imperial regent, Perdiccas, not only to spare her life, but to give her in marriage to King Philip Arrhidaeus, Alexander the Great's half-brother and successor to the throne of Macedon, as had been Cynane's plan. Sources hint that this was an unequal marriage, because the king was disabled mentally. Furthermore, although Philip Arrhidaeus was king of Macedon, this did not make him the imperial successor to Alexander; Alexander had won his empire by law of conquest, and the Asian portion of the empire (more than nine-tenths of the whole) was not part of the people of Macedon.

The sources are again silent as to Eurydice during the life of Perdiccas; but after his death, in 321 BC Eurydice bid for power: she demanded that the new regents of Macedon, Peithon and Arrhidaeus, grant her a share of the regency. Eurydice's 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. She took an active part in the proceedings at the Treaty of Triparadisus in 321 BC.

...
Wikipedia