entity_id,source_id,evidence_type,source_note
ENT_MUSES_HELICONIAN,SRC_HESIOD_THEOGONY,direct attestation,"Hesiod, Theogony 1-2: the opening invocation of ""the Heliconian Muses."""
ENT_MUSES_HELICONIAN,SRC_THEOI_HOME,index attestation,"Attested in Theoi Project index (Greek gods, spirits, heroes in classical literature)."
ENT_MUSES_HELICONIAN,SRC_THEOI_NYMPHS,index attestation,Literary attestation in classical/mythographic tradition; cult evidence varies by entity.