Tacitus · Trajan Were Tacitus and Trajan alive at the same time? Yes. Tacitus and Trajan were alive at the same time, from c. AD 55 to AD 115–119. TacitusRoman historian and senatorBorn c. AD 55 · died c. AD 120Trajan13th Roman EmperorBorn 18 September AD 53 · died AD 115–119 Saint PeterPaul the ApostleNeroPlutarchTacitusTrajanPtolemy Tacitus and Trajan in bold, with some of their best-known contemporaries. Drag across to see the age each reached in any year. Faded ends mark uncertain dates.