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.
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