(Δηϊδάμεια).
1. Daughter of Aeacides, king of Epeirus, and sister of Pyrrhus. While yet a girl she was betrothed by her father to Alexander, the son of Roxana, and having accompanied that prince and Olympias into Macedonia, was besieged in Pydna together with them. (Plut. Pyrrh. 4; Diod. 19.35; Justin, 14.6.) After the death of Alexander and Roxana, she was married to Demetrius Poliorcetes, at the time when the latter was endeavouring to establish his power in Greece, and thus became a bond of union between him and Pyrrhus. (Plut. Demetr. 25, Pyrrh. 4.) When DIemetrius proceeded to Asia to support his father against the confederate kings, lie left Deidameia at Athens; but after his defeat at Ipsus, the Athenians sent her away to Megara, though still treating her with regal honours. She soon after repaired to Cilicia to join Demetrius, who had just given his daughter Stratonice in marriage to Seleucus, but had not been there long when she fell ill and died, B. C. 300. (Plut. Demetr. 30, 32.) She left one son by Demetrius, named Alexander, who is said by Plutarch to have spent his life in Egypt, probably in an honourable captivity. (Plut. Demetr. 53.)