entity_id,source_id,evidence_type,source_note
ENT_CASTOR,SRC_APOLLODORUS_LIBRARY,scholarly attestation,Library 3.11.1-2; Dioscuri; Castor as horse-tamer; their death and alternate immortality
ENT_CASTOR,SRC_HOMER_ILIAD_ODYSSEY,direct attestation,"Castor is named in Iliad III.236-244 (the Teichoscopia: Helen looks for her brothers Castor and Polydeuces on the battlefield but notes they are not visible, not knowing they are already dead in Sparta); Odyssey XI.300-304 (they alternate life and death each day)"
ENT_CASTOR,SRC_THEOI_DEIFIED,index attestation,Literary attestation in classical/mythographic tradition; cult evidence varies by entity.
ENT_CASTOR,SRC_THEOI_HOME,index attestation,"Attested in Theoi Project index (Greek gods, spirits, heroes in classical literature)."