Roman Catholic Diocese of Sansepolcro

[8] The Camaldolese monks, coming from their house in Arezzo, first appear in documents relating to the abbey of San Sepolcro on 11 January 1137.

[9] In 1148, Pope Eugenius III confirmed the monastery's privileges, and granted the abbot the use of the mitre, staff, and other pontifical vestments.

[10] In 1163, the Imperial Archchancellor, Archbishop Raynaldus of Cologne, promulgated an imperial decree of the Emperor Frederick Barbarossa, forbidding the Camaldolese from having any authority to depose and deprive an abbot of San Sepolcro, without the license and permission of the emperor.

On the withdrawal of the Milanese forces after the Peace of Sarzana in 1353, a civil war broke out between Guelphs and Ghibellines, between Borgo San Sepolcro and Città di Castello.

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.