CAMPUS IOVIS
mentioned only once (Hist. Aug. Pescenn. 12), with no indication of its location. It has been suggested that it might have been in Region VII, near the NYMPHAEUM IOVIS of Reg., and that this may have been built by Diocletian, who assumed the cognomen of Iovius as a sign of his devotion to the cult of Jupiter (Pr. Reg. 110, 136). It is, however, more likely that it is a mere invention on the analogy of campus Martius (SHA 1916, 7.A, 13).