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:''This article is about the mythological figure. For the moon of Jupiter, see Io (moon).'' Io (; (:iːɔ̌ː)) was, in Greek mythology, one of the mortal lovers of Zeus. She was an ancestor of Cadmus and Danaus. ==Legend== In most versions of the legend, Io was the daughter of Inachus,〔Aeschylus, ''Prometheus Bound'', 590〕〔Apollodorus, ''Bibliotheca'', 2.1.3〕〔Herodotus, ''Histories'', 1.1〕〔Ovid, ''Metamorphoses'', 1.583〕 though various other purported genealogies are also known. Pausanias suggests that she is the daughter of Iasus,〔Pausanius, ''Description of Greece'', 2.1.6〕 who himself was either the son of Argus Panoptes and Ismene, the daughter of Asopus,〔 or of Triopas and Sosis; Io's mother in the latter case was Leucane.〔Scholia on Euripides' ''Orestes'', 932〕 Io's father was called Peiren in the ''Catalogue of Women'',〔''Catalogue of Women''. fr. 124〕 and by Acusilaus,〔〔Acusilaus, fr.12〕 possibly a son of the elder Argus, also known as Peiras, Peiranthus or Peirasus.〔M.L. West, ''The Hesiodic Catalogue of Women: Its Nature, Structure, and Origins'' (Oxford, 1985) 77〕〔Pausanias, ''Description of Greece'', 2.1.3〕〔Hyginus, ''Fabulae'', 124.〕 Io may therefore be identical to Callithyia, daughter of Peiranthus, as is suggested by Hesychius of Alexandria.〔Hesychius of Alexandria s. v. 〕 Io was a priestess of the Goddess Hera in Argos,〔〔Apollodorus, ''Bibliotheca'', 2.1.3〕 whose cult her father Inachus was supposed to have introduced to Argos.〔 Zeus noticed Io, a mortal woman, and lusted after her. In the version of the myth told in ''Prometheus Bound'' she initially rejected Zeus' advances, until her father threw her out of his house on the advice of oracles. According to some stories, Zeus then turned Io into a heifer in order to hide her from his wife;〔 others maintain that Hera herself transformed Io.〔〔Aeschylus, ''Suppliant Women'', 291〕 In the version of the story in which Zeus transformed Io, the deception failed, and Hera begged Zeus to give her the heifer as a present, which, having no reason to refuse, he did. Hera then sent Argus Panoptes, who had 100 eyes, to watch Io and prevent Zeus from visiting her, and so Zeus sent Hermes to distract and eventually slay Argus. According to Ovid, he did so by first lulling him to sleep by playing the panpipes and telling stories.〔Ovid, ''Metamorphoses'', I.650-730〕 Zeus freed Io, still in the form of a heifer. In order to exact her revenge, Hera sent a gadfly to sting Io continuously, driving her to wander the world without rest. Io eventually crossed the path between the Propontis and the Black Sea, which thus acquired the name Bosporus (meaning ''ox passage''), where she met Prometheus, who had been chained on Mt. Caucasus by Zeus. Prometheus comforted Io with the information that she would be restored to human form and become the ancestress of the greatest of all heroes, Heracles (Hercules). Io escaped across the Ionian Sea to Egypt, where she was restored to human form by Zeus. There, she gave birth to Zeus's son Epaphus, and a daughter as well, Keroessa. She later married Egyptian king Telegonus. Their grandson, Danaos, eventually returned to Greece with his fifty daughters (the Danaids), as recalled in Aeschylus' play ''The Suppliants''. The myth of Io must have been well known to Homer, who often calls Hermes ''Argeiphontes'', meaning "Argus-slayer." Walter Burkert〔Burkert, ''Homo Necans'' (1974) 1983:164 note 14, giving bibliography.〕 notes that the story of Io was told in the ancient epic tradition at least four times of which we have traces: in the ''Danais'', in the ''Phoronis''— Phoroneus founded the cult of Hera, according to Hyginus' ''Fabulae'' 274 and 143—in a fragment of the Hesiodic ''Aigimios'', as well as in similarly fragmentary Hesiodic ''Catalogue of Women''. A mourning commemoration of Io was observed at the Heraion of Argos into classical times. The ancients connected Io with the Moon,〔Eustathius of Thessalonica commentary on ''Dionysius Periegetes'', 92; the Byzantine encyclopedia Suda ''s.v.'' "Io", Hesychius, ''s.v.'' "Io".〕 and in Aeschylus' ''Prometheus Bound'', where Io encounters Prometheus, she refers to herself as "the horned virgin", both bovine and lunar. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Io (mythology)」の詳細全文を読む スポンサード リンク
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