e longer name Gregorianus must be preferred to Gregorius. (Zimmern. R. R. G. vol. 1.46. n. 35.) Burchardi (Lehrbuch des Rör. Rechts, vol. i. p. 233, Stuttgart. 1841), nevertheless, prefers the shorter form, Gregorius, and thinks that the compiler of the codex may have been the Gregorius to whom was addressed, in A. D. 290, a rescript of the emperor Diocletian (Cod. Just. i. tit. 22. s. 1), and may also have been identical with the Gregorius who was praefectus praetorio under Constantine in A. D. 336 and 337. (Cod. Theod. 3. tit. 1. s. 2, Cod. Theod. 2. tit. 1. s. 3, Cod. Just. 5. tit. 27. s. 1, Nov. 89. 100.15.)
This hypothesis is consistent with the date at which the Gregorianus Codex may be supposed to have been compiled, for the latest constitution it contains is one of Diocletian and Maximinian of the year A. D. 295.
In the ninth volume of Savigny's Zeitschrift, p. 235-300, Klenze published, for the first time, from a manuscript of the Breviarium Alaricia