Liber

thumb|Three Roman [[Votive column|votive pillars; the one on the left reads Libero Patri Valerius Daphinus a[nimo] l[ibens] p[osuit]: "Valerius Daphinus erects [this monument] to Liber Pater of his free will."]] In ancient Roman religion and mythology, Liber ( , ; "the free one"), also known as Liber Pater ("the free Father"), was a god of viticulture and wine, male fertility and freedom. He was a patron deity of Rome's plebeians and was part of their Aventine Triad. His festival of Liberalia (March 17) became associated with free speech and the rights attached to coming of age. His cult and functions were increasingly associated with Romanised forms of the Greek Dionysus/Bacchus, whose mythology he came to share.

== Etymology == The name Līber ('free') stems from Proto-Italic *leuþero, and ultimately from Proto-Indo-European *h₁leudʰero ('belonging to the people', hence 'free').