Gaius Sallustius Crispus, usually anglicised as Sallust (/ˈsæləst/; 86 – c. 35 BC), was a Roman historian, politician, and novus homo from an Italian plebeian family. Sallust was born at Amiternum in the country of the Sabines and was a popularis, an opponent of the old Roman aristocracy, throughout his career, and later a partisan of Julius Caesar. Sallust is the earliest known Roman historian with surviving works to his name, of which Catiline's War (about the conspiracy in 63 BC of L. Sergius Catilina), The Jugurthine War (about Rome's war against the Numidians from 111 to 105 BC), and the Histories (of which only fragments survive) are still extant. Sallust was primarily influenced by the Greek historian Thucydides and amassed great (and ill-gotten) wealth from his governorship of Africa.
Sallust was probably born in Amiternum in Central Italy, though Eduard Schwartz takes the view that Sallust's birthplace was Rome. His birth date is calculated from the report of Jerome's Chronicon. But the New Zealander Ronald Syme suggests that Jerome's date has to be adjusted because of his carelessness, and suggests 87 BC as a more correct date. However, Sallust's birth is widely dated at 86 BC, and the Kleine Pauly Encyclopedia takes 1 October 86 BC as the birthdate.Michael Grant cautiously offers 80s BC.