Codes of Roman Law Before Justinian
Codes of Hermogenianus (Constitutions from Hadrian [117-138 A.D. to Diocletian 284-305 A.D.]) and Gregorianus (Constitutions of Diocletian). Private Collections
Codex Theodosianus (438 A.D.). An expansion of the Codes of Hermogenianus and Gregorianus from the Emperor Constantine (306-337 A.D.) to the time of Theodosianus.
The Germanic tribes who conquered the Western Provinces of the Empire also collected Roman law for the Romans who lived under them: Lex Romana Visigothorum (475 A.D.), Breviarium Alarici (506 A.D.), and the Lex Romana Burgunionum (ca. 500 A.D.). Canonical collections gathered ax-large part of their Roman law from these collections.
Colossal Statue of the Emperor Constantine
Capitoline Museum, Rome