Barison II of Arborea

Barison II or Barisone II was the giudice (judge or ruler) of Arborea, a kingdom of Sardinia, from 1146 to 1186. He was the son of Comita II and Elena de Orrubu. His reign was groundbreaking in Sardinian history. It saw the birth of Catalan influence there, the escalation of the Genoese-Pisan conflict, and the first royal investiture over the entire island when Barisone was briefly recognised as King of Sardinia by the Holy Roman Emperor from 1164 to 1165.

Barisone was born sometime early in the twelfth century. He may have been associated in the giudicato with his father from an unknown date. He succeeded immediately on his father's death. In his early years, he was on good terms with Pisa and at peace with the church. He attended the consecration ceremony of Santa Maria di Bonarcado with most of the Arborean clergy and Villano, Archbishop of Pisa, his overlord. He donated land from his demesne to the church.

His reign became interesting when, in 1157, he repudiated his first wife, Pellegrina de Lacon, of an old and noble island family, and married Agalbursa de Cervera, daughter of Ponce and Almodis, sister of Raymond Berengar IV, Count of Barcelona. By this second marriage, he entered into alliance with the count of Barcelona, which represents the first Catalan influence in Sardinia. His correspondence with the count indicates the mutual nature of the alliance. Barisone warred against the Balearic Almoravids on behalf of Barcelona and Raymond Berengar supported his attempts to unite the various giudicati under his rule.

Firstly, as a direct descendant of Constantine II of Cagliari he claimed that giudicato from Peter, who was ruling jure uxoris through Constantine's daughter. Barisone invaded Cagliari and forced Peter to flee to his brother Barisone II's court at Torres. In Spring 1164, the giudicati of Torres and Cagliari, united with the Pisans of the island, retook Cagliari and invaded Arborea. Barisone took refuge in the castle of Cabras. From there, remembering his father's anti-Pisan policy, he contacted the Republic of Genoa, through which was enlisted the support of the Emperor Frederick Barbarossa. In August, the emperor proclaimed Barisone "King of Sardinia" in a ceremony in San Siro in Pavia. In exchange, Barisone agreed to annual payments of four thousand silver marks and to recognise imperial sovereignty over the island. In September, Barisone signed a treaty with Genoa. For military aid he granted them rights to set up markets in his territory and gave them the port of Oristano with the castles of Arculentu and Marmilla as surety against his payment of a large sum.

...
Wikipedia