In Greek mythology, Calchinia (Ancient Greek: Καλχινίᾳ) was a Sicyonian princess as a daughter of King Leucippus of Aegialea. She consorted with the sea-god Poseidon and bore him a son, Peratus. Leucippus reared his grandson and with the former's death, he handed over the kingdom to Peratus.Pausanias, 2.5.7.
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References
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.