Flaccus, was appointed in A. D. 19 by Tiberius to undertake the administration of Moesia, and to operate against king Rhascupolis, who had killed Cotys, his brother and colleague in the kingdom. Velleius (2.129) gives him very high praise; saying that he was a vir natus ad omnia quae recte facienda sunt, simplicique virtute merens semper, non captans gloriam.
He was, however, a friend of Tiberius, with whom, on one occasion, he spent one whole night and two days in uninterrupted drinking. (Suet. Tib. 42
He died in A. D. 34, as propractor of Syria, where he had been for many years. (Tac. Ann
2.32, 6.27.) Velleius calls him a consular, whence some writers are of opinion that he is the same as L. Pomponius Flaccus, but this opinion is irreconcileable with chronology. (Comp. Ov. ex Pont.
4.9. 75; Masson, Vit. Ovid.
ad ann. 769.)