Ceto

Even the Medusa's origin myth in most Greek story is that she wasn't Poseidon rape victim but a gorgon monster siblings with hers sisters who were daughters of Ceto the seas monster.

Clash of the Titans Might Have Been a Good, or at Least Better Movie | /Film 2010

And yet again he got great Thaumas and proud Phorcys, being mated with Earth, and fair-cheeked Ceto and Eurybia who has a heart of flint within her.

Hesiod, Homeric Hymns, and Homerica 2007

There are those among us who claim that some upstart merely wished to steal the worship due to Jove; and that Baphomet, a child of Phorcys and Ceto, was the man crucified at Calvary; or else Simon the Magician, one of the Gray Sisters 'sons.

Orphans of Chaos 2005

Thus Hine's poem says to us: pictured here is the moment just before the hero Perseus will strike dead the monstrous offspring of Phorcys and Ceto.

The Beauty of the Medusa: A Study in Romantic Literary Iconology 1972

She united herself with the latter, and their offspring were the sea-deities Nereus, Thaumas, Phorcys, Ceto, and

Myths and Legends of Ancient Greece and Rome E.M. Berens

Phorcys and Ceto, and were the personification of those benumbing, and, as it were, petrifying sensations, which result from sudden and extreme fear.

Myths and Legends of Ancient Greece and Rome E.M. Berens

GORGONS were three in number, and daughters of Phorcus or Porcys, by his sister Ceto.

Roman Antiquities, and Ancient Mythology For Classical Schools (2nd ed) Charles K. Dillaway

Phorcys and Ceto personified more especially the hidden perils and terrors of the ocean.

Myths and Legends of Ancient Greece and Rome E.M. Berens

SCYLLA was the daughter of Phorcus, or Phorcys, by Ceto.

Roman Antiquities, and Ancient Mythology For Classical Schools (2nd ed) Charles K. Dillaway

Oceanus, where dwelt the Grææ, daughters of Phorcys and Ceto.

Myths and Legends of Ancient Greece and Rome E.M. Berens