Julius Caesar · Vitruvius Were Julius Caesar and Vitruvius alive at the same time? Yes. Julius Caesar and Vitruvius were alive at the same time, from c. 80 BC to 44 BC. Julius CaesarRoman general and dictatorBorn July 100 BC · died 15 March 44 BC, aged 55VitruviusRoman architect and engineerBorn c. 80 BC · died c. 15 BC CiceroJulius CaesarVitruviusCleopatraVirgilHoraceAugustusOvid Julius Caesar and Vitruvius 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.