The Evolution of the Ius commune

Tomb of Mondino de'Liuzza (1275-1326)

San Vitale, Bologna

Justinian's Corpus iuris civilis: Digest, Codex, Institutes, Novellae (=Authenticae, inserted into Codex) promulgated between 529 and 534 A.D.

Codex Florentinus Firenze, Biblioteca Laurenziana, sine numero

Pepo (1075)
Irnerius († ca. 1125)

The Four Doctors of Roman Law:

Bulgarus (ca. 1130-1160)
Martinus (ca. 1150-1160)
Jacobus (ca. 1150-1169)
Hugo (ca. 1144-1166)