Hermione (hərmĪˈənē) [key], in Greek mythology, the only daughter of Helen and Menelaus. When Helen eloped with Paris, Hermione was abandoned to the care of Clytemnestra. She later married Neoptolemus, the son of Achilles. In Euripides' Andromache, she is carried off by Orestes who marries her after he has contrived the murder of Neoptolemus at Delphi.
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