proconsul of Further Spain, was condemned of Vis public
in A. D. 23, and exiled (deportatus
) to the little island of Amorgus, near Naxos.
The real reason of his punishment was his being an enemy of the all-powerful Sejanus, as we learn from Dio Cassius (58.8), who relates the circumstance, but without mentioning the name of Serenus.
In the following year he was brought back to Rome, because he was accused by his own son, in the senate, of a plot against the emperor.
The younger Serenus bocame one of the most infamous accusers in the reign of Tiberius, and was therefore held in all the higher honour by the emperor. (Tac. Ann. 4.13