Cytherus (Kytheros)

The attestations of Cytherus/Kytheros in the provided sources are primarily onomastic and topographic rather than narrative. As a river‑god (potamos) Kytheros is recorded as the named spirit of a small Elis stream that served as a tributary of the Alpheios flowing from Mount Pholoe past Herakleia. As a civic toponym Cytherus is listed in classical reference as one of the twelve cities of ancient Attica and later appears as a deme. Pausanias (as summarized in the sources) records that the nymphs of the river Cytherus were called Ionides after an Ion, son of Gargettus, who migrated from Athens to Elis; this provides an onomastic/mythic link between Attica and the Elean river‑nymphs in local tradition but does not supply a full origin narrative for the river‑god himself.

No physical or iconographic description for Cytherus/Kytheros is given in the supplied material. The river‑god is identified by role and geographic locus (the Elis stream) but sources do not record anthropomorphic imagery, cult statuary, or distinguishing monuments. Likewise, the Attic Cytherus is attested only as a place‑name/deme in the classical record without descriptive detail of urban form or landmarks in the provided texts.

The sources do not list any specific deeds, powers, or behaviors attributed uniquely to Kytheros. Its classification as a potamos places it within the general category of river personifications in Greek religious thought (local supervision of a watercourse, association with local nymphs and cult), but no source cited here enumerates individual abilities, miracles, or myths for this named river‑god beyond its identification and associations.