 The synthesis of the glosses was made, mainly, by Bartholomew de Brescia, in the 12th century, and also by Juan the Teutónico, in the 13th century, of Hugh of Pisa and Henry of Segusio.On his return from Italy, after being crowned Holy Roman Emperor by Pope Adrian IV, Frederick I summoned a diet in Besançon (1157), with object to reform the political statute of his kingdom in Arles.In that diet the first differences between the high civil employees of the emperor, in special took place the chancellor Rainaldo de Dassel, and the pontifical legacy, and future Pope Alexander III, Rolando Bandinelli.