The Italian Catholic archdiocese of Campobasso-Boiano became an archdiocese in 1973 and a metropolitan see in 1976. The historical diocese of Boiano was renamed diocese of Boiano-Campobasso in 1927. It was suffragan to the archdiocese of Benevento.

History

The first recorded bishop of Boiano is Adalberto (1071). Others were:

• Poliziano (1215) who consecrated the cathedral;
• Giovanni (1226), who decorated the facade at his own expense, as recorded in an inscription;
• Silvio Pandoni (1489), who restored the work of Giovanni;
• Cardinals Franciotto Orsini (1519) and Carlo Carafa
  Carlo Carafa
  Carlo Carafa of a distinguished family of Naples, vicious and talented was successively condottiero in the service of France and of Spain, vying for their protectorates in Italy until 1555, when he was made a cardinal, to 1559 the all-powerful favourite and Cardinal Nephew of Pope Paul IV Carafa,...
  
   (1572), who adorned the cathedral with costly furnishings;
• Celestino Bruni (1653), theologian and preacher.

After the death of Bishop Nicolò Rosetti (elected in 1774), differences between the Holy See

Holy See

The Holy See is the episcopal jurisdiction of the Catholic Church in Rome, in which its Bishop is commonly known as the Pope. It is the preeminent episcopal see of the Catholic Church, forming the central government of the Church. As such, diplomatically, and in other spheres the Holy See acts and...

 and the Kingdom of Naples

Kingdom of Naples

The Kingdom of Naples, comprising the southern part of the Italian peninsula, was the remainder of the old Kingdom of Sicily after secession of the island of Sicily as a result of the Sicilian Vespers rebellion of 1282. Known to contemporaries as the Kingdom of Sicily, it is dubbed Kingdom of...

 prevented the appointment of a successor until 1836, when Giuseppe Riccardi was appointed.