Diocese of Frosinone-Veroli-Ferentino
|Ecclesiastical province||Immediately exempt to the Holy See|
|Area||804 km2 (310 sq mi)|
|(as of 2016)|
|Sui iuris church||Latin Church|
|Established||by 8th century|
|Cathedral||Cattedrale di S. Maria Assunta (Frosinone)|
|Co-cathedral||Concattedrale di S. Andrea Apostolo (Veroli)|
Concattedrale di Ss. Giovanni e Paolo (Ferentino)
|Secular priests||77 (diocesan)|
25 (Religious Orders)
6 Permanent Deacons
The Diocese of Frosinone-Veroli-Ferentino(Latin : Dioecesis Frusinatensis-Verulana-Ferentina) is a Latin Church ecclesiastical territory or diocese of the Catholic Church in Italy. It has existed since 1986. In that year, the Diocese of Ferentino was united into the Diocese of Veroli-Frosinone, which was the name of the historic Diocese of Veroli from 1956. It is immediately exempt to the Holy See and not part of an ecclesiastical province.  
This section needs expansion. You can help by adding to it. (October 2016)
Veroli was only fifty-two miles from Rome, and therefore an excellent benefice for a prelate who was employed in the Roman Curia. 
In a bull of 18 June 1081 Pope Gregory VII confirmed the extent of the territory of the diocese of Veroli for Bishop Albert.  Pope Urban II confirmed the possessions of the Church of Veroli in a bull of 2 July 1097,  and the provisions of the bull were repeated by Pope Paschal II in a bull of 4 September 1108, written for the benefit of Bishop Albert. 
Pope Alexander III, in exile from Rome, lived with his Court at Veroli from 16 March 1170 to 10 September 1170.  At some point during his reign, Pope Alexander determined that the number of Canons in the Cathedral of Saint Andrew in Veroli should be sixteen. 
Pope Lucius III left Anagni and sought refuge in Veroli, from 27 March 1184 to 28 May 1184. 
On 8 September 1351, Veroli was shaken by a major earthquake, while the clergy were singing Vespers in the cathedral. The co-cathedral of S. Salome was completely ruined, and the saint's remains were buried in the rubble for more than six weeks. The entire city of Veroli was heavily damaged. 
The first steps toward the foundation of an episcopal seminary in the diocese of Veroli were taken by Bishop Girolamo Asteo (1608–1626), forty-eight years after the Council of Trent had decreed that every diocese ought to have a seminary for the education of the clergy. The first students did not enter the institution until 1652. 
On 15 May 1863, Pope Pius IX paid a formal visit to Veroli, "to raise the morale of the inhabitants of the area." 
In 1818, when the diocese of Fondi was suppressed and its territory handed over to the diocese of Gaeta, immediate protest were lodged by the town of Vallecorsa, who wished to belong to the Papal States and the civil province of Rome, a protest which was entered again and again over the following century. Finally, on 21 March 1921, Pope Benedict XV issued the bull "Sedis Apostolicae", removing Vallecorsa from the archdiocese of Gaeta and annexing it to the diocese of Veroli. 
Bishop Ortensio Battisti (1567–1594) presided over two diocesan synods between 1568 and 1593. Bishop Eugenio Fucci (1594–1608) held a diocesan synod. A diocesan synod was held by Bishop Eugenio Fucchi between 1596 and 1608.  A diocesan synod was held by Bishop Fortunato Maurizi (1856–1868) on 28–30 June 1863. 
By 1956, the Vatican had become aware of changing settlement and employment patterns in cities and towns throughout Italy. In central Lazio, Frosinone had long since become the largest city, as well as the regional capital and seat of magistrates and public services (from the early 19th century). Pope Pius XII, therefore, authorized the Consistorial Congregation in the papal government to issue a decree, adding the name of Frosinone to that of the diocese of Veroli. The decree of 29 February 1956 ordered that the title of the diocese and the title of the bishop should be Verulanus-Frusinatensis. 
The Second Vatican Council, 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, in particular those with financial and personnel problems.  It also decreed that the natural population units of people, together with the civil jurisdictions and social institutions that compose their organic structure, should be preserved as far as possible as units.
On 18 February 1984, the Vatican and the Italian State signed a new and revised concordat. 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. This applied to the dioceses of Veroli and Frosinone. The Vatican therefore continued consultations which had begun under Pope John XXIII for the merging of dioceses. On 30 September 1986, Pope John Paul II ordered that the dioceses of Veroli, Frosinone, and Ferentino be merged into one diocese with one bishop, with the Latin title Dioecesis Frusinatensis-Verulana-Ferentina. The seat of the diocese was to be in Frosinone, whose cathedral was to serve as the cathedral of the merged dioceses. The cathedrals in Veroli and Ferentino were to become co-cathedrals, and the cathedral Chapters were each to be a Capitulum Concathedralis. There was to be only one diocesan Tribunal, in Frosinone, and likewise one seminary, one College of Consultors, and one Priests' Council. The territory of the new diocese was to include the territory of the former dioceses of Veroli, Frosinone, and Ferentino. 
Erected: 8th Century
This list is incomplete; you can help by adding missing items. (October 2016)
Name Changed: 29 February 1956
United: 30 September 1986 with the Diocese of Ferentino
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|first1=has generic name (help)
Coordinates: 41°38′N13°21′E / 41.633°N 13.350°E