15. M. Herennius, M. f. PICENS, was consul suffectus in the last two months of B. C. 34.
The cognomen PICENS is doubtful. As Picenum was a Sabellian district, Picens may indicate a branch of the Herennia Gens settled therein. [W.B.D]
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.