The following section is structured after the chapter "1. The Early Gods" in
Timothy Gantz's
Early Greek Myth: A Guide to Literary and Artistic Sources (1993). In antiquity, the
Theogony (700 BC), a work by the
Boeotian poet
Hesiod, was considered the standard mythological telling of the world's earliest ages. The poem details an extensive genealogy of the gods, and describes the events which led to the current state of the cosmos, under the rule of
Zeus. The
cosmogonic part of the work, which is fairly brief, begins the account of this mythical history. Though Hesiod's poem is the only
theogony which is extant in its entirety, during the
archaic era (c. 800–480 BC) there existed similar works, ascribed to various legendary or historical writers such as
Orpheus,
Musaeus,
Pherecydes, and
Epimenides. Of works outside the theogonic genre,
Homeric epic only briefly references the world prior to Zeus's rule, and the 1st–2nd-century AD
Bibliotheca of Apollodorus provides an account similar to Hesiod's.
Primal elements Hesiod's cosmogony begins with
Chaos, who is followed by several other primal beings. The poet then details two generations of descendants of Chaos. Later in the poem, he continues his enumeration of her descendants, listing various dismal abstractions who descend from her daughter,
Nyx (these figures are listed under ). Of these primordial figures in Hesiod's poem, deities such as Nyx,
Aether, and
Eros feature in a number of other early cosmogonies. File:Aether in battle with a lion-headed Giant.jpg|alt=Aether, fighting a lion-headed Giant, on a frieze|
Aether (right) File:Atalanta Lekythos, 500-490 BC, Greek, Attic, attributed to Douris, ceramic - Cleveland Museum of Art - DSC08215.JPG|alt=Young adult Eros, winged and flying|
Eros File:Terracotta lekythos (oil flask) MET DP225322 (cropped).jpg|alt=Cloaked Nyx, flying a two-horse chariot|
Nyx Descendants of Gaia and Uranus Aside from the descendants of Chaos, all the remaining deities of Hesiod's poem genealogically originate from
Gaia (or Earth). On her own, she produces several figures who represent parts of the physical world, including
Uranus (or Sky) and
Pontus (or Sea), both of whom subsequently mate with her. Together with Uranus, she sits at the head of the family which eventually produces the Olympians; the couple's children include the twelve
Titans (listed under ), the youngest of whom,
Cronus, castrates his father. The resulting spilt blood and detached genitals lead in time to further offspring. File:Klytaimnestra Erinyes Louvre Cp710.jpg|alt=Vase painting of two Erinyes, sleeping|
Erinyes File:Altar Pérgamo Urano 01.JPG|alt=Uranus, with wings, on a frieze|
Uranus Descendants of Gaia and Pontus The other lineage arising from Gaia is the family she produces with Pontus, which includes figures associated with the sea and an assortment of monsters. File:Altar Pérgamo Keto 06.JPG|alt=Ceto, robed and with long hair, on a frieze|
Ceto File:Iris Louvre L43 n2.jpg|alt=Iris, winged, and with blonde hair|
Iris File:Sea thiasos Nereis Glyptothek Munich 239 front n1.jpg|alt=Relief of a Nereid riding a sea-bull|A
Nereid File:Column krater, Sophilos, 590 BC, NAMA 12587, 191273.jpg|alt=Vase painting of Nereus, with a fishtail|
Nereus The Titans and their descendants The Titans, the twelve offspring of Uranus and Gaia, are the generation who come before the Olympians. The group consists of six members of each sex: four male-female pairs are married couples, with the remaining two male Titans marrying other goddesses, and the remaining two female Titans later coupling with Zeus. Many of the Titans' descendants relate to the physical world and its organisation. In sources after Hesiod, there is some disagreement as to the names of the twelve Titans, and there are several figures described as Titans beyond the original group of twelve. File:Comparable with the Nikias Painter - ARV 1335 extra - Herakles and Atlas and the garden of the Hesperides - draped youths - München AS - 10.jpg|alt=Vase painting of Atlas, holding up a disc|
Atlas File:Rhea handing a swaddled stone to Cronus, Attic terracotta pelike, c. 460–450 BC, Met 06.1021.144.jpg (cropped).jpg|alt=Rhea handing Cronus a swaddled stone|
Cronus (right) and
Rhea (left) File:Eos Memnon Louvre G115.jpg|alt=A winged Eos holds a man's body in her arms|
Eos (winged) File:Okeanos London 1971.11-1.1.jpg|alt=Procession of figures in a vase painting|
Oceanus (centre) and
Tethys (immediately to his left) File:Brygos Painter 370 10 Selene - gigantomachy (03).jpg|alt=Selene, flying a two-horse chariot|
Selene File:0029MAN-Themis.jpg|alt=Statue of a robed Themis|
Themis == Groups of divinities and nature spirits ==