[1][2] Still, it has been suggested that the divisions between the orders were not firmly established during the first decades of the Republic, and that as many as a third of the consuls elected before 450 may in fact have been plebeians.
According to tradition, these were the names of the sons of Lucius Junius Brutus, the first consul, who joined in a conspiracy by their uncles, the Vitellii, to restore the Tarquins to power.
[5] The family names and surnames of the Junii which occur in the time of the Republic are, Brutus, Bubulcus, Gracchanus, Paciaecus, Pennus, Pera, Pullus, and Silanus.
However, his father is also referred to as Brutus by the ancient authorities, and while this may have come about merely for narrative convenience, it is possible that the surname had already been borne by the family for some time.
The only persons known to have borne this cognomen also bore that of Brutus, and therefore may have belonged to that family, rather than a distinct stirps of the Junia gens.
They appear in history during the Second Samnite War, at the same time as the other Junii Bruti emerge from two centuries of obscurity, with the agnomen Scaeva.
[20] The surname Gracchanus was assumed by one of the Junii in the latter part of the second century BC, on account of his friendship with Gaius Gracchus.
[21] Paciaecus or Paciacus, the cognomen of another member of the gens, does not appear to be of Roman origin, although it may be that Paccianus or Pacianus is the correct form.
[22][23][24] Silanus appears to be a lengthened form of Silus, "snub-nosed", which occurs as a cognomen in the Sergia and Terentia gentes, and is not connected with the Greek Silenus, who was nonetheless depicted on their coins.
The Junii Silani first appear in history during the Second Punic War, and for the next four hundred years they occupied the highest offices of the state.
From the middle of the second century BC, at least some of the Silani were descended from the patrician Manlii, from whom they inherited the additional surname Torquatus.