The Ius commune ---  pan-European legal system

Bologna. Pepo, Irnerius,

Emperor Justinian’s (535-565 A.D.) Corpus iuris civilis

libri legales

 
Gratian 1120-1140 (?)

Papal case law, decretals

Papal case law was a living law and provided a rich and varied set of problems that the jurists explored in their commentaries and in the classroom.