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]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890