The Collaborative International Dictionary
Ogygian \O*gyg"i*an\ ([-o]*j[i^]j"[i^]*an), a. [L. Ogygius, Gr. 'Ogy`gios.] Of or pertaining to Ogyges, a mythical king of ancient Attica, or to a great deluge in Attica in his days; hence, primeval; of obscure antiquity.
Douglas Harper's Etymology Dictionary
1843, "of great antiquity or age," from Greek Ogygos, name of a mythical Attic or Boeotian king who even in classical times was thought to have lived very long ago. Also sometimes with reference to a famous flood said to have occurred in his day.
Wikipedia
Ogygian (foaled March 17, 1983, in Florida – died March 14, 2015 at Old Friends Equine Georgetown, Kentucky) was a multiple Grade 1 stakes (G1) winning Thoroughbred race horse and an important broodmare sire.
Usage examples of "ogygian".
Aeetes gave them for the contest the fell teeth of the Aonian dragon which Cadmus found in Ogygian Thebes when he came seeking for Europa and there slew the--warder of the spring of Ares.