Breviary of Alaric put into effect by Visigoth king

King Alaric II of the Visigoths put the Breviary of Alaric, a collection of Roman laws, into effect on February 2, 506. The breviary contains constitutions and laws of the newly fallen Roman Empire, including the Theodosian code, and parts of the Gregorian and Hermogenian Codes. The Breviary of Alaric predated the Byzantine Empire’s Code of Justinian by 23 years. 

Read an entry on the Breviary of Alaric from the Encyclopaedia Brittanica.