Aventine Triad

The Aventine Triad (also referred to as the plebeian Triad or the agricultural Triad) is a modern term for the joint cult of the Roman deities Ceres, Liber and Libera. The cult was established ca. 493 BC within a sacred district (templum) on or near the Aventine Hill, traditionally associated with the Roman plebs. Later accounts describe the temple building and rites as "Greek" in style. Some modern historians describe the Aventine Triad as a plebeian parallel and self-conscious antithesis to the archaic Capitoline Triad of Jupiter, Mars and Quirinus and the later Capitoline Triad of Jupiter, Minerva and Juno. The Aventine Triad, temple and associated ludi (games and theatrical performances) served as a focus of plebeian identity, sometimes in opposition to Rome's original ruling elite, the patricians.

The Aventine relationship between Ceres, Liber and Libera was probably based first on their functions as agricultural and fertility deities of the plebs as a distinct social group. Liber had been companion to both Ceres and to Libera in separate and disparate fertility cults that were widespread throughout the Hellenised Italian peninsula, long before their official adoption by Rome – or rather, their partial assimilation, as Ceres' own cult appears to have been considered more tractable and obedient than Liber's. Their Aventine cults, reported in later Roman sources as distinctively Greek in character, may have been further reinforced and influenced by their perceived similarities to particular Greek deities: Ceres to Demeter, Liber to Dionysus (Roman Bacchus) and Libera to Persephone (Roman Proserpina). In keeping with Roman theology, the internal and external equivalence of the Aventine Triad remained speculative, broad and flexible. Long after its establishment, Cicero rejects the equivalence of Liber and Dionysus and asserts that Ceres is mother to Liber and Libera.

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