THEOGONY
theogony
(noun) the study of the origins and genealogy of the gods
Source: WordNet® 3.1
Etymology
Noun
theogony (plural theogonies)
(chiefly, in ancient religion) The origination of gods or a narrative describing the origin of gods.
Source: Wiktionary
The*og"o*ny, n. Etym: [L. theogonia, Gr. Theism, and Genus.]
Definition: The generation or genealogy of the gods; that branch of heathen
theology which deals with the origin and descent of the deities;
also, a poem treating of such genealogies; as, the Theogony of
Hesiod.
Source: Webster’s Unabridged Dictionary 1913 Edition