Ephyra () or Ephyre () was another name for ancient Corinth. It also refers to two figures in Greek mythology: Ephyra, one of the 3,000 Oceanids, water-nymph daughters of the Titans OceanusHyginus, Fabulae 275; Scholia ad Apollonius Rhodius, 4.1212–1214 (p. 310 Wendel) as cited in Simonides, fr. 596 and his sister-wife Tethys. Otherwise, she was called the daughter or wifeScholia ad Apollonius Rhodius, 4.1212–1214 (p. 310 Wendel) as cited in Simonides, fr. 596Eumelus, fr. 1 Fowler (Fowler 2013, p. 13); Stephanus of Byzantium, s.v. Korinthos of the Titan Epimetheus. Ephyra was the first to dwell in the land of Ephyrae, which was later called Corinth.Pausanias, 2.1.1 with Eumelus in his Korinthian History as the authority In some accounts, her father was called MyrmexStephanus of Byzantium, s.v. Korinthos. Ephyra was sometimes attributed to be the mother of Aeetes by Helios.Epimenides in Scholia ad Apollonius Rhodius, 3.242 Ephyre, one of the 50 Nereids, sea-nymph daughters of the "Old Man of the Sea" Nereus and the Oceanid Doris.Hyginus, Fabulae Preface She was in the train of Cyrene along with her sister Opis, Deiopea and Arethusa.Virgil, Georgics 4.343 This Ephyra may be the same to the above Oceanid.This was definitely a misinterpretation of Hyginus in Virgil's Georgics 4.343 which suggests that Ephyra was a naiad, more likely an Oceanides, rather than a Nereid.
Cichyrus in Epirus was also known as Ephyra.
Popular culture In the game, Hades II (the sequel to Hades), "Ephyra" is the name of a City-state (a Polis) sacred to Hades & Persephone (parents of the protagonist, Melinoë), having been founded near a known entrance to the underworld (a Ploutonion similar to the Necromanteion of Acheron)--now overrun by the forces of Cronus, the titan of time (making it a necropolis). Possibly referring to modern-day Cranon, known as "Ephyra" back then, or the above-mentioned Corinth. Here, the 'helpful-hand' character for Melinoë while on her quest is her fellow sorceress (and a first-cousin, once-removed, due to the game-franchise Retconning Demeter and Helios as siblings) and an accomplished pharmakís, Lady Medea (a grand-daughter of Helios'), stationed up in Ephyra prior by Lady Hecate to be her eyes and ears there. In Greek mythology, Sisyphus was the founder and king of Ephyra (now known as Corinth).
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References Fowler, Robert L., Early Greek Mythography. Volume 2: Commentary. Oxford University Press. 2013. Gaius Julius Hyginus, Fabulae from The Myths of Hyginus translated and edited by Mary Grant. University of Kansas Publications in Humanistic Studies. Online version at the Topos Text Project. Pausanias, Description of Greece with an English Translation by W.H.S. Jones, Litt.D., and H.A. Ormerod, M.A., in 4 Volumes. Cambridge, MA, Harvard University Press; London, William Heinemann Ltd. 1918. . Online version at the Perseus Digital Library Pausanias, Graeciae Descriptio. 3 vols. Leipzig, Teubner. 1903. Greek text available at the Perseus Digital Library. Publius Vergilius Maro, Bucolics, Aeneid, and Georgics of Vergil. J. B. Greenough. Boston. Ginn & Co. 1900. Online version at the Perseus Digital Library.