The name Laurentius often appears as the earliest known bishop of Bojano, and a participant in the third Roman synod of
Pope Symmachus (498–514) in 501. It has been pointed out, however, that the manuscripts have variants:
Bovianensis, Bobianensis, Boensis, Bonensis, Bononiensis, Bonomensis, Vovianensis, Vohianensis, Vivianensis. Giuseppe Cappelletti rejected the attribution of Laurentius to Bojano, and suggested Bobbio instead. But, as Francesco Lanzoni pointed out, the diocese of Bobbio is a later foundation. Pius Gams does not include Laurentius in his list of bishops of Bojano.
Suffragan of Benevento In the second half of the 9th century, Boiano had its own
gastald, who was subject to the Lombard prince of Benevento. Around 860, an alliance against the Saracens was entered into by the gastald of Boiano, the gastald of Telese, the count of Marsi, and the duke of Spoleto. In 1047, Boiano was still subject to the archbishop of Benevento. On 24 January 1058,
Pope Stephen IX confirmed the privileges and rights of Udalricus, Archbishop of Benevento, including the church of Boiano. In June 1061, an unnamed bishop of Boiano took part in the first provincial synod of Archbishop Udalricus of Benevento. The first bishop of
Boiano known by name is Adalberto (Alberto), who participated in the consecration of the major church at
Montecassino by
Pope Alexander II, on 1 October 1071. Bishop Poliziano consecrated the cathedral in 1215, with the participation of the bishops of
Lucera,
Fiorentino,
Ariano, and Tortiboli.
Destruction by emperor In 1221, the city of Boiano was captured by
Frederick II, and set to the torch. In his edict, the "Statutum de reparatione castrorum", Frederick provided for the construction, maintenance, and provision of certain fortresses throughout his domains, which were to be inspected every quarter by "provisores castrorum". In 1239, Frederick designated certain strategic castles as "castra exempta", which were to be administered directly by the "provisores castrorum." One of these was Bojano. The men of Boiano were assigned to keep the castrum in repair. Others were: Giovanni (1226), who decorated the facade at his own expense, as recorded in an inscription;
Silvio Pandoni (1489), who restored the work of Giovanni; Cardinal
Franciotto Orsini (1519) and Bishop
Carlo Carafa (1572), who adorned the cathedral with costly furnishings; and
Celestino Bruni (1653), theologian and preacher. A great earthquake struck the kingdom of Naples on 5 December 1456. The city of Boiano and nearly all the inhabitants were reported killed. On 22 August 1794, Bishop Nicholas Rossetti held a diocesan synod in the cathedral of S. Bartolommeo in Boiano.
Destruction by earthquake In the major earthquake of 26 July 1805, most of Boiano was destroyed, with 124 of the 3,433 inhabitants killed. Francesco Macarone (1879–1897) presided over a diocesan synod, held from 25 to 27 August 1885.
Transfer of episcopal seat On 29 June 1927, citing the size of the city of Campobasso and the superior transportation connections,
Pope Pius XI ordered the transfer of the seat of the bishop of Boiano from Boiano to Campobasso. The church of Santissima Trinità was named a cathedral, and the Chapter of the cathedral of S. Bartholomew the Apostle in Boiano was transferred to Campobasso. The rights of the cathedral of Boiano were suppressed. The diocese was to be called "Boianensis-Campobassensis". The former archpriest of the cathedral of Boiano was appointed
Archpresbyter-parochus of the cathedral of Campobasso. The seminary of the diocese of Boiano was transferred to Campobasso, and the students from Boiano were exempted from paying the "pensio".
Promotion of diocese and bishop On 11 February 1973,
Pope Paul VI raised the diocese of Boiano-Campobasso to the rank of an archdiocese, and its bishop to the rank of archbishop. At the same time, he released the archdiocese from being a suffragan of the archdiocese of Benevento, and made it immediately subject to the Holy See (Papacy). On 5 March 1973, at a public consistory, Archbishop Alberto Carinci requested and received his
pallium.
Metropolitan Following the
Second Vatican Council, and in accordance with the norms laid out in the council's decree,
Christus Dominus chapter 40, Pope Paul VI ordered a reorganization of the ecclesiastical provinces in southern Italy. On 21 August 1976, he issued the decree "Ad apicem", creating the new ecclesiastical province entitled «Boianensis-Campobassensis», with its administrative center in Campobasso. The metropolitan archdiocese was assigned as suffragans the dioceses of
Trivento (which had been immediately subject to the Holy See),
Isernia-Venafro (which had been subject to the metropolitan archdiocese of Capua), and
Termoli-Larino (which had been subject to the metropolitan archdiocese of Benevento.
Increase in territory On 21 January 1983,
Pope John Paul II issued the decree "Ad Uberius", by which he removed the towns of Sant'Angelo Limosano, Limosano, Matrice, Campolieto, Monacilioni, San Giovanni in Galdo, Toro, Campodipietra, Jelsi, Gildone, Gercemaggiore, Riccia, Gambatesa, Tufara, Pietracatella, Macchia Valfortore, S. Elia a Pianisi, from the ecclesiastical jurisdiction of the archbishop of Benevento and assigned them to the jurisdiction of the archbishop of Campobasso-Boiano. ==Bishops of Boiano==