[crater] Achelous is a relatively fresh crater on Ganymede adjacent to the similarly sized Gula. It has an outer lobate ejecta deposit extending about a crater radius from the rim. A characteristic feature of both craters, almost identical in size, is the `pedestal` - an outward-facing, relatively gently sloped scarp that terminates the con...
Found on
http://en.wikipedia.org/wiki/Achelous_(crater)

a son of Oceanus and Tethys; horned chief of the river gods.
Found on
http://www.chalquist.com/writings/greekmyth/

In Greek mythology, Achelous was a river god, a son of Oceanus and Tethys, who changed into a snake and later a bull while fighting Hercules for the hand of Deianira, however despite his shape-changing ability he was defeated when Hercules broke off one of his horns.
Found on
http://www.probertencyclopaedia.com/browse/D1A.HTM
No exact match found.