Calvi'nus, T. Vetu'rius
was twice consul, in B. C. 334 and 321.
In his second consulship he and his colleague Sp. Postumius Albinus commanded the Roman army at Caudium against the Samnites, where the Romans suffered the wellknown defeat, and passed under the yoke.
The consuls concluded a treaty with the Samnites; but as this treaty was not approved of by the Romans, the consuls who had concluded it, and several other officers, were delivered up to the Samnites. (Liv. 8.16
; Appian, Samnit.
6; Cic. De Senec.
12, De Off.
3.30; comp. Niebuhr, Hist. of Rome,
iii. p. 211, &c.)