the step-father (vitricus) of the wife of the younger Pliny (Plin. Ep. 9.13.13). Pliny addresses one of his letters (3.15) to a certain Proculus, who may perhaps be the same person as this Vectius Proculus.
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.