 Complete the following phrase:  From the imagery on their coins, it appears that the Cassii had a special devotion to the Aventine Triad of Ceres, Liber, and Libera, for whom Spurius Cassius Viscellinus built a temple on the Aventine Hill in 494. Libertas, a goddess associated with Liber and Libera, also features regularly on their coins. She was later the emblem of the 