The gens Livia was an illustrious plebeian family at ancient Rome. The first of the Livii to obtain the consulship was Marcus Livius Denter in 302 BC, and from his time the Livii supplied the Republic with eight consuls, two censors, a dictator, and a master of the horse. Members of the gens were honoured with three triumphs. In the reign of Augustus, Livia Drusilla was Roman empress, and her son was the emperor Tiberius.
Origin
History preserves no traditions concerning the origin of the Livian gens. Although its members are not found in the first two centuries of the Republic, there is nothing in particular to suggest a foreign origin. The regular cognomina of the Livii are all Latin. The nomen Livius is generally supposed to be derived from the same root as , and , all with the meaning of leaden or bluish-grey, but this connection is not absolutely certain. Pokorny dismissed this derivation, arguing that the nomen either predated these words, or could not be linguistically connected with them. He hypothesized an Etruscan origin for the Livii.
Branches and cognomina
The cognomina of the Livii during the Republic were Denter, Drusus, Libo, Macatus, and Salinator. Of these, Denter was a common surname originally referring to someone with prominent teeth. Macatus means "spotted", being derived from the same root as macula.
Drusus probably means "stiff", although Suetonius records a tradition that the first of the name received it after slaying a Gallic chieftain named Drausus. If this is the true origin of the name, then it probably dates the story to the year 283 BC, when the Senones, the Gallic people of whom Drausus was said to be the leader, were defeated and scattered, for the most part vacating northern Italy. Libo, derived from libere, designated a libation pourer, and entered the family from the Scribonia gens, one of whom was adopted by the Livii Drusi.
The surname Salinator, meaning a salt-merchant, is said to have been given in derision to Marcus Livius, who as censor in 204 BC, imposed an unpopular salt tax. A question arises from the fact that Marcus' father is also referred to as Salinator, although the historians may simply have applied the cognomen retroactively.
Members
Early Livii
Gaius Livius, grandfather of the consul of 302 BC, may have been the magister equitum of 348. Lucius Livius, tribune of the plebs in 320 BC, the year after the disaster at the Caudine Forks. The consul, Albinus, had pledged himself and the other Roman magistrates as guarantors of the peace, in order to preserve the lives of the Roman army. Livius and one of his colleagues resisted the demand to turn themselves over to the Samnites as hostages, as they had nothing to do with the agreement, and moreover were sacrosanct as tribunes, the entire body of the Roman people obliged to defend them; but Postumius browbeat them until they agreed to become hostages. However, the Samnites rejected the hostages, when they realised that the Romans were bound to continue the war with or without them. Marcus Livius Denter, consul in 302 BC. Previously he had been one of the pontiffs chosen from the plebeians to augment the numbers of that college.