The conventional date of 1088, or 1087 according to some,[16] records when Irnerius commences teaching Emperor Justinian’s 6th century codification of Roman law, the Corpus Iuris Civilis, recently discovered at Pisa. Lay students arrived in the city from many lands entering into a contract to gain this knowledge, organising themselves into ‘Nationes’, divided between that of the Cismontanes and that of the Ultramontanes. The students “had all the power … and dominated the masters