4. PETRONIUS, a tribune of the soldiers, served in the army of Crassus, in his expedition against the Parthians, B. C. 55, and was with Crassus when the latter was killed. (Plut. Crass. 30, 31.)
William Smith. A Dictionary of Greek and Roman biography and mythology. London. John Murray: printed by Spottiswoode and Co., New-Street Square and Parliament Street. In the article on Soranus, we find: "at this present time (1848)" and this date seems to reflect the dates of works cited. 1873 - probably the printing date.