Helen of Troy, Greek Helene, in Greek legend, the most beautiful woman of Greece and the indirect cause of the Trojan War. She was daughter of Zeus, either by Leda or by Nemesis, and sister of the Dioscuri. As a young girl she was carried off by Theseus, but she was rescued by her brothers. She was also the sister of Clytemnestra, who married Agamemnon. Her suitors came from all parts of Greece, and from among them she chose Menelaus, Agamemnon’s younger brother.