a Roman jurist, who probably died in the lifetime of Pomponius, for Pomponius mentions him as if he were no longer living, and cites, on his authority, a constitution of the emperor Antoninus: " Pactumeius Clemens aiebat imperatorem Antoninum constituisse." (Dig. 40
. tit. 7. s. 21.1.)
The name Antoninus is exceedingly ambiguous, as it belongs to Pius, Marcus, L. Verus, Commodus, Caracalla, Geta, Diadumenus, and Elagabalus; but in the compilations of Justinian, the name Antoninus, without addition, refers either to Caracalla, M. Aurelius, or Pius--usually to the first; to the second, if used by a jurist who lived earlier than Caracalla, and not earlier than Marcus; to the third, if used by a jurist who was living under Pius. (Zimmern, R. R. G.
i. p. 184, n. 8.) Here it probably denotes Pius, of whom Pactumeius Clemens may be supposed to have been a contemporary.