is first mentioned towards the latter end of the reign of Tiberius, A. D. 32, when he is spoken of as a person of consular rank. (Tac. Ann. 6.4.) We learn from Dio Cassius (59.13) and the Fasti that he was consul A. D. 39, in the reign of Caligula, but from the passage of Tacitus quoted above, he must have been consul previously, though his first consulship does not occur in the Fasti. He also held the office of praefectus urbi in the reign of Caligula. (Dio Cass. l.c.) In the reign of Claudiushe had the command in Lower Germany, and died in the province, A. D. 47. (Tac. Ann. 11.18.) He seems to have been a different person from Sanquinius, the accuser of Arruntius. (Tac. Ann. 6.7.)