The Celadon is a mythological river of Arcadia crossed by Heracles in pursuit of the Hind of Ceryneia, according to Pindar: it is mentioned by Strabo. Pausanias names it the Celadus and states that it is a tributary of the Alpheus. As stated in Callimachus, Hymn 3 to Artemis 98 ff (trans. Mair) (Greek poet C3rd B.C.), it is said that when Heracles was venturing for the Golden Hind, one of them escaped over the river and then Heracles had to give chase.[1][2]
Revd J. Banks (1856). The works of Hesiod, Callimachus, and Theognis. London: H.G. Bohn. p. 141.
Michael Grant; John Hazel (2002). Who's who in classical mythology. Routledge. p. 198. ISBN0-415-26041-8.
John Lemprière (1823). A classical dictionary: containing a copious account of all the proper names mentioned in ancient authors (12th ed.). Printed for T. Cadell. p. 166.