Roman Catholic Diocese of Nicotera-Tropea

[5] The Diatyposis of the Emperor Leo VI (c. 900) lists the Greek Metropolitan of Reggio and his suffragans: the dioceses of Vibona, Tauriana, Locri, Rossano, Squillace, Tropea, Amantea, Cotrone, Cosenza, Nicotera, Bisignano, Nicastro and Cassano.

[6] In 1304, Nicotera was deprived of its bishopric, because of the murder of its bishop, and the cathedral was reduced to the status of a parish church.

[8] On 16 August 1392, Pope Boniface IX issued a bull which reestablished the diocese of Nicotera.

This meant that prelates could not receive bulls of appointment, consecration, or installation without the king's permission.

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).

[19] On 27 June 1818, Pius VII issued the bull De Ulteriore in which the metropolitan archdiocese of Reggio Calabria was restored, and among its suffragans were included the dioceses of Nicotera and Tropea.

[21] The Second Vatican Council (1962–1965), in order to ensure that all Catholics received proper spiritual attention, decreed the reorganization of the diocesan structure of Italy and the consolidation of small and struggling dioceses.

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.