1. Greek
  2. Titans
  3. Coeus


A Titan in Greek mythology, Coeus was the father of Leto and Asteria, and grandfather of Apollo and Artemis.

A Titan of Greek mythology, Coeus was the son of the primordial deities Gaia and Uranus. With his sister and lover Phoebe, Coeus fathered the goddesses Asteria and Leto; Zeus’s courtship of the latter resulted in the conception of Artemis and Apollo. Following the Titanomachy, Coeus and the other Titans were imprisoned in Tartarus. He eventually led the other Titans in an escape attempt, one which ultimately proved unsuccessful.


The name “Coeus” was derived from the ancient Greek Koios, meaning “question,” “inquiry,” or “inquisitiveness.”


Based on his name’s etymnological roots, it is presumed that Coeus was a god of intelligence, wisdom, and the pursuit of knowledge. His attributes, however, were never explicitly defined.


Coeus was the son of Gaia, the great earth mother, and Uranus, the father of the heavens. His siblings included the other Titans—Crius, Cronus, Hyperion, Iapetus, Oceanus, Thea, Rhea, Themis, Mnemosyne, Phoebe, and Tethys—as well as the Cyclopes and the Hecatoncheires.

With his sister Phoebe, Coeus had Asteria, a goddess said to have assumed the shape of an island in order to escape Zeus’s advances, and Leto, one of Zeus’s early wives. Through his daughters, Coeus had three grandchildren: Hecate, the goddess of boundaries and crossroads; Artemis, goddess of the hunt and unspoiled nature; and Apollo, the god of wisdom and music.


As with many secondary Titans, Coeus was only mentioned briefly in the Greek texts. In Hesiod’s Theogony, for example, Coeus was named only twice: once when he was listed as a child of Gaia and Uranus, and again when he was noted as Phoebe’s consort and the father of “dark-gowned” Leto and Asteria “of happy name.”1

Coeus appeared more prominently in Roman texts, such as Gaius Valerius Flaccus’s Argonautica, where he was presented in the adventurous role of a prison break leader. Though Coeus attempted to escape Tartarus, he ultimately failed when he could not overpower Cerberus, the three-headed dog guarding the entrance to the underworld:

As when Coeus in the lowest pit bursts the adamantine bonds and trailing Jove’s fettering chains invokes Saturn and Tityus, and in his madness conceives a hope of scaling heaven, yet though he repass the rivers and the gloom the hound of the Furies and the sprawling Hydra’s crest repel him.2

While this unique excerpt offers a tantalizing glimpse into a forgotten mythological tradition, it may have been little more than a fantastical story—one created to fill the void in our understanding of Coeus and the Titans as a whole.

Pop Culture

Coeus made an appearance in The House of Hades, the fourth book in Rick Riordan’s The Heroes of Olympus series. In this iteration, “Koios” was a Titan anxious to reclaim the cosmos from Zeus and the Olympians.



  1. “Coeus.” Wikipedia. Accessed February 1, 2020. https://en.wikipedia.org/wiki/Coeus.

  2. Hesiod. Theogony. Translated by Hugh Evelyn-White. Internet Sacred Text Archive. Accessed February 2, 2020. https://www.sacred-texts.com/cla/hesiod/theogony.htm.

  3. Flaccus, Gaius Valerius. Argonautica. Translated by J.H. Mozley. Theoi Greek Mythology. Accessed February 3, 2020. https://www.theoi.com/Text/ValeriusFlaccus3.html.


  1. Hesiod, Theogony, translated by Hugh Evelyn-White, 116-138; 404-419. 

  2. Gaius Valerius Flaccus, Argonautica, translated by J.H. Mozley, Book III: 220-235. 


About the Author

Thomas Apel is a historian of science and religion who received his Ph.D. in History from Georgetown University.