Manius Acilius Glabrio
He was consul in 67 BC with Manius Acilius Glabrio. He belonged to the optimates, and, as consul, led the opposition to the proposed law of the tribune Aulus Gabinius, by which Gnaeus Pompeius Magnus was to be entrusted with extraordinary powers for the purpose of conducting the war against the pirates. The law, however, was carried, notwithstanding all the opposition of Piso and his party. Shortly afterwards, when the orders that Pompeius had issued were not carried into execution in Gallia Narbonensis, in consequence, as it was supposed, of the intrigues of Piso, Gabinius proposed to deprive the latter of his consulship, an extreme measure which Pompey's prudence would not allow to be brought forward.