24. L.CalpurniusPiso, probably the eldest son of No. 23. In the judgment which the senate pronounced upon the sons of Cn. Piso [see above, No. 23], it was decreed that the eldest Cneius should change his praenomen (Tac. Ann. 3.17) ; and it would appear that he assumed the surname of Lucius, since Dio Cassius (59.20) speaks of a Liucius (not Cneius) Piso, the son of Cn. Piso and Plancina, who was governor of Africa in the reign of Caligula. This supposition is confirmed by the fact that Tacitus speaks of only two sons, Cneius and Marcus. We may therefore conclude that he is the same as the L. Piso, who was consul in A. D. 27, with M. Licinius Crassus Frugi. (Tac. Ann. 4.62.)