Myth Library · Divine Genealogy

Hyperion, Theia, and the Celestial Children

3 source witnesses · 3 source-scoped variants · reviewed 2026-08-30

Hesiod and Pseudo-Apollodorus make Hyperion and Theia parents of Eos, Helios, and Selene, while Homeric Hymn 31 names Euryphaessa as the children’s mother.

Canonical narrative

Hesiod moves from the river children of Oceanus and Tethys to another Titan union. Theia, overcome in love by Hyperion, bears great Helios, bright Selene, and Eos, whose light reaches mortals and the gods in heaven. The lines form a compact celestial household: dawn, sun, and moon share parents, but each child remains a separate divinity.

Pseudo-Apollodorus preserves the same triad in prose. To Hyperion and Thia are born Dawn, Sun, and Moon. The mythographer places them among other Titan descendants, setting their genealogy beside the children of Coeus and Phoebe, Crius and Eurybia, and Iapetus. The family is part of an ordered succession of births rather than a story of Hyperion creating celestial bodies.

Homeric Hymn 31 changes one vital name. Hyperion weds glorious Euryphaessa, his sister, and she bears Eos, Selene, and Helios. The hymn then turns almost entirely to Helios: golden helmet, rays, chariot, horses, and daily descent to Ocean. Those brilliant attributes belong to the son in the poem. They are not a hidden portrait of his father.

The three witnesses agree on Hyperion’s paternity and the sibling triad but do not give one seamless maternal identity. Theia, Thia, and Euryphaessa must remain visible as the sources name them.

Episodes in this myth

Episode 1

Hyperion and Theia produce the celestial siblings

Hesiod joins Hyperion and Theia and names Eos, Helios, and Selene as their children.

Episode 2

Hymn 31 names Euryphaessa

Hymn 31 changes the mother’s name to Euryphaessa while preserving the three celestial siblings.

Participants and roles

Hyperion

Father of Eos, Helios, and Selene

Theogony 371-374, Library 1.2.2, and Hymn 31.1-16: Hyperion is father of Eos, Helios, and Selene.

Theia

Mother in Hesiod and Pseudo-Apollodorus

Theogony 371-374 and Library 1.2.2 name Theia or Thia as mother of Eos, Helios, and Selene.

Euryphaessa

Mother named by Homeric Hymn 31

Homeric Hymn 31.1-6 names Euryphaessa as mother of Eos, Selene, and Helios.

Source-scoped variants

Theia in Hesiod

Theia and Hyperion form the Archaic parent pair of Dawn, Sun, and Moon.

What differs: Theia and Hyperion produce Eos, Helios, and Selene in the Archaic theogony.

Greek Archaic · Ancient Greece

Thia in Pseudo-Apollodorus

The mythographer repeats the three siblings under the maternal spelling Thia.

What differs: The mythographer preserves the triad in a compressed Titan genealogy.

Greek Roman Imperial · Ancient Greece

Euryphaessa in Hymn 31

The hymn names Euryphaessa as mother before praising Helios and his solar equipment.

What differs: The hymn names Euryphaessa as mother before describing Helios’s own solar attributes.

Ancient Greek Diachrony · Ancient Greece

Source witnesses

EXPLICIT PRIMARY · Reviewed

Theogony

Hesiod; edited and translated by Hugh G. Evelyn-White · 1914

Line 371-374

Hesiodic Theia genealogy; the exact passage controls this version and its differences.

Open reviewed source

EXPLICIT PRIMARY · Reviewed

Library

Pseudo-Apollodorus; edited and translated by James G. Frazer · 1921

Book 1 · Chapter 2 · Section 2

Mythographic Thia genealogy; the exact passage controls this version and its differences.

Open reviewed source

EXPLICIT PRIMARY · Reviewed

Homeric Hymns

Anonymous Homeric Hymns; edited and translated by Hugh G. Evelyn-White · 1914

Hymn 31 · Line 1-16

Hymnic Euryphaessa genealogy; the exact passage controls this version and its differences.

Open reviewed source