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Several versions of a semi-official, structured pantheon were developed during the political, social and religious instability of the Late Republican era. Jupiter, the most powerful of all gods and "the fount of the auspices upon which the relationship of the city with the gods rested", consistently personified the divine authority of Rome's highest offices, internal organization and external relations. During the archaic and early Republican eras, he shared his temple, some aspects of cult and several divine characteristics with Mars and Quirinus, who were later replaced by Juno and Minerva. A conceptual tendency toward triads may be indicated by the later agricultural or plebeian triad of Ceres, Liber and Libera, and by some of the complementary threefold deity-groupings of Imperial cult. Other major and minor deities could be single, coupled, or linked retrospectively through myths of divine marriage and sexual adventure. These later Roman pantheistic hierarchies are part literary and mythographic, part philosophical creations, and often Greek in origin. The Hellenization of Latin literature and culture supplied literary and artistic models for reinterpreting Roman deities in light of the Greek Olympians, and promoted a sense that the two cultures had a shared heritage.

What gods did Juno and Minerva replace in Roman religious practice?
Mars and Quirinus