Liber Augustalis

The Constitutions of Melfi, or Liber Augustalis, were a new legal code for the Kingdom of Sicily promulgated on 1 September 1231 by Emperor Frederick II. It was given at Melfi, the town from which Frederick's Norman ancestors had first set out to conquer the Mezzogiorno two centuries earlier. Originally a reform of the Assizes of Capua of 1220, themselves his reform of the Assizes of Ariano of 1140, the Constitutions formed the basis of Sicilian law for the next six centuries.

The author of the Constitutions is purported to be Frederick himself, though Giacomo Amalfitano, Archbishop of Capua, appears as an influence as well. He was even reproved by the pope for accepting and advising clauses contrary to the wishes of the church. Traditionally, the work has been attributed to Pier delle Vigne, but it is almost certain that, while Frederick, Giacomo and Pier had their hand in it, the Liber is the product of months of work by a committee.

The Constitutions were written in Latin and translated into Greek before their promulgation. They were meant to apply, as with previous Sicilian law, to all the peoples of the realm: Lombards, Greeks, Saracens, Germans, Jews. The 253 clauses are divided into three books:

The Constitutions, like the Assizes before them, strengthened the power of the king and diminished the power of his feudatories. The centralising and bureaucratising tendencies of Roger II's legislation continued a century later in the Constitutions. It also continued to emphasise the sacral role and God-given right to rule of the monarch. Frederick II wrote in the Constitutions that "we, whom He elevated beyond hope of man to the pinnacle of the Roman Empire."

Militarily, the Constitutions prohibited bearing arms without permission. A standing Saracen army was created to prevent the king from having to call up the unreliable barons, surely angered by the Constitutions. These, the feudatories, were gravely affected in other ways, too. For example, the sale of fiefs was banned, putting an end to subinfeudation, and all vassals were subject to the king's taxes and other imposts.

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