[6] In 1391, the diocese of Lucera was increased by the addition of the bishopric of Castel Fiorentino (Farentino), a city founded in 1015 by the Byzantine catapan Basil Mesardonites, and the place of Emperor Frederick II's death.

In November 1127, Pope Honorius was in Troia, where he held a council, in which he excommunicated Count Roger and anyone who should support his efforts to become Duke of Apulia.

[14] Pope Urban II held a synod at Troia on 11–12 March 1093, at which fifty-five bishops were in attendance.

The right of the king to nominate the candidate for a vacant bishopric was recognized, as in the Concordat of 1741, subject to papal confirmation (preconisation).

[20] On 27 June 1818, Pius VII issued the bull De Ulteriore in which the metropolitan archdiocese of Benevento was restored.

The decree "Eo quod spirituales" of 12 September 1976 created a new episcopal conference in the region called "Basilicata".

On 30 April 1979, Pope John Paul II continued the reorganization by promoting the diocese of Foggia to the rank of metropolitan archbishopric, and assigned to its new ecclesiastical province the dioceses of Siponto, Troia (which had been directly subject to the Holy See), Ausculo e Cerignola, Bovino, Lucera, Santo Severino and Vestana.

Based on the revisions, a set of Normae was issued on 15 November 1984, which was accompanied in the next year, on 3 June 1985, by enabling legislation.

According to the agreement, the practice of having one bishop govern two separate dioceses at the same time, aeque personaliter, was abolished.