Libera ( ) was a goddess of wine, fertility and freedom. She was the female equivalent of Liber (freedom), while her name is in the feminine form. At some time during Rome's Regal or very early Republican eras, she became paired up with Liber, also known as Liber Pater (The Free Father), Roman god of wine, male fertility, and a guardian of plebeian freedoms. She enters Roman history as Triadic cult companion to Ceres and Liber, in a temple established on the Aventine Hill ca. 493 BC. The location and context of this early cult mark her association with Rome's commoner-citizens, or plebs; she might have been offered cult on March 17 as part of Liber's festival, Liberalia, or at some time during the seven days of Cerealia (mid to late April); in the latter festival she would have been subordinate to Ceres. Otherwise, her relationship to her Aventine cult partners is uncertain.