The report of Marta Cerrito is part of a broader research on criminal transactions as disciplined, interpreted and used in the Regnum Siciliae from Federico II (Liber Augustalis) until the promulgation of the Alphonsian rite of 1446. The investigation aims to identify a juridical and political order – the southern – that is profoundly different from the communal one. What value should be attributed to the will of the private…