5. Cn. Postumius, was one of the supporters (subscriptores) of Ser. Sulpicius in his prosecution of Murena for bribery in B. C. 63.
He had been a candidate for the praetorship in the same year. (Cic. pro Mur. 26, 27, 33.)
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.