Titus is the praenomen (the personal name); Livius is the nomen (the gentile name, i.e. "belonging to the gens Livia"). Therefore, Titus Livius did not have a cognomen (third name, i.e. family name), which was not unusual during the Roman Republic. About this, classical sources agree: Seneca (Ep. 100.9); Tacitus (Ann. IV.34.4); Pliny (Ep. II.3.8); and Suetonius (Claud. 41.1) call him Titus Livius.Quintilian calls him Titus Livius (Inst. Or. VIII.1.3; VIII.2.18; X.1.101) or simply Livius (Inst. Or. I.5.56; X.1.39). In the sepulchral inscription from Patavium, which most probably concerns Titus, he is named, with the patronymic, T Livius C f, ''Titus Livius Cai filius'' (CILV, 2975).
