Roman Catholic Diocese of Trieste

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The Italian Roman Catholic Diocese of Trieste (Latin: Dioecesis Tergestina) in the Triveneto, has existed since no later than 524, and in its current form since 1977. The bishop's seat is in Trieste Cathedral. It is a suffragan of the Archdiocese of Gorizia.[1][2]

Diocese of Trieste

Dioecesis Tergestina
Trieste Cattedrale di San Giusto frontside.jpg
Trieste Cathedral
Ecclesiastical provinceGorizia
Area134 km2 (52 sq mi)
- Total
- Catholics (including non-members)
(as of 2010)
221,700 (91.7%)
DenominationCatholic Church
RiteRoman Rite
Established6th Century
CathedralBasilica Cattedrale di S. Giusto Martire
Current leadership
BishopGiampaolo Crepaldi
Roman Catholic Diocese of Trieste in Italy.svg
Diocesi di Trieste


Frugifer, consecrated in 524, was the first bishop of Trieste; the diocese was then a suffragan of the archdiocese of Aquileia.

Among the bishops were:

From 1787 a series of administrative changes took place, beginning with the suppression of the diocese of Pedena, which was added to that of Trieste. Emperor Joseph II then abolished the diocese of Trieste in 1788, merging it into the archdiocese of Gradisca. In 1791 Joseph's brother, Emperor Leopold II, divided the archdiocese of Gradisca into the newly created diocese of Gorizia-Gradisca, or Görz-Gradisca, and a re-created diocese of Trieste, appointing as its bishop the tutor of his children Sigismund Anton, Count of Hohenwart. Later attempts were made to suppress the see again, but the emperor decreed its preservation, appointing Ignatius Cajetanus von Buset zu Faistenberg bishop.[3] After his death in 1803 the see remained vacant for eighteen years, because of the disorders caused by Napoleon.

Emperor Franz II finally appointed Antonio Leonardis da Lucinico as the new bishop of Trieste in 1821. In 1828 the Slovenian diocese of Koper, or Capodistria-Koper, was united with Trieste, after which it was known as the Diocese of Trieste-Koper (Capodistria),[4] or Triest-Capo d'Istria (in the German spelling).

Bishop Bartholomew Legat was present at the Synod of Vienna in 1849, where he defended the views of the minority in the First Vatican Council. In 1909 Bishop Franz Xaver Nagl was appointed coadjutor cum jure successionis to the ninety-year-old Cardinal Prince-Archbishop Anton Gruscha of Vienna.

In 1977 Koper / Capodistria became an independent diocese once more, leaving the diocese of Trieste in its present state.[5]



Diocese of TriesteEdit

Erected: 6th Century
Latin Name: Tergestinus
Metropolitan: Archdiocese of Gorizia


Diocese of Trieste e CapodistriaEdit

United: 30 June 1828 with the Diocese of Capodistria and territory added from the suppressed Diocese of Novigrad
Latin Name: Tergestinus et Iustinopolitanus
Metropolitan: Archdiocese of Gorizia

Diocese of TriesteEdit

17 October 1977: Split into the Diocese of Koper and the Diocese of Trieste

Coadjutor BishopsEdit

Other priests of this diocese who became bishopsEdit


  1. ^ "Diocese of Trieste" David M. Cheney. Retrieved February 29, 2016
  2. ^ "Diocese of Trieste" Gabriel Chow. Retrieved February 29, 2016
  3. ^ Bishop Ignatius Cajetanus von Buset zu Faistenberg [Catholic-Hierarchy]
  4. ^ also including the titular diocese of Aemona (Cittanova)
  5. ^ Catholic Encyclopedia article
  6. ^ "Bishop Giacomo Balardi Arrigoni, O.P." David M. Cheney. Retrieved March 21, 2016
  7. ^ "Bishop Pompeo Coronini" David M. Cheney. Retrieved July 21, 2016
  8. ^ "Bishop Antonio Marenzi" David M. Cheney. Retrieved July 21, 2016

  This article incorporates text from a publication now in the public domainHerbermann, Charles, ed. (1913). Catholic Encyclopedia. New York: Robert Appleton Company. Missing or empty |title= (help)

Coordinates: 45°38′47″N 13°46′20″E / 45.6465°N 13.7722°E / 45.6465; 13.7722