ULPIANUS, DOMITIUS, a celebrated Roman jurist, of whom hardly anything is known with certainty, was most probably a Tyrian who flourished during the reign of S. Severus and his son Antoninus Caracalla—that is, from A.D. 198 to A.D. 211. Although one of the most fertile writers on Roman law, almost all we know of him is contained in the Domitii Ulpiani Fragmenta, 1836; the Florentine Index, and the few excerpts in the Digest of Justinian. The last edition of the Fragmenta is that of E. Bocking, Leipzig, 1855. The style of Ulpian, though clear, is too diffuse to admit of his being classed in the highest rank of Roman jurists.