Il Giudicato di Calari tra XI e XIII secolo. Proposte di interpretazioni istituzionali

The paper proposes an institutional and legal status of the Iudices of Calari - the direct descendants of the ancient Iudices Provinciae of Sardinia, created by the Emperor Justinian in the 6th century AD - from the time of their appearance in the documentary sources in the second half of the 11th century until their disappearance to the mid- 13th century especially by the hand of the town of Pisa. The paper shows the process followed by these political and institutional Sardinian leaders in an attempt to be legally recognized as sovereigns outside the Sardinian regional authorities, especially by the Italian Republics, by the Apostolic See and the Holy Roman Empire.