Roman Catholic Diocese of Banja Luka

Christianity arrived on the territory of present-day diocese of Banja Luka during the Roman rule in the first century AD. Christians and bishops from the area settled around two metropolitan seats, Salona and Sirmium. In this area there was at that time the seat of at least one diocese, Diocese of Baloie (probably near Šipovo), whose bishop participated in the church synod of Salona in 530.

Catholic churches and monasteries before the Ottoman conquest

After the barbaric invasion and after the settlement of Slavic tribes, these regions belonged to the surrounding dioceses: Split, Nin, Knin, Krbava and Bosnia, and the area of today's Banja Luka and the entire northern region was part of the Diocese of Zagreb. A rich life of the Catholic Church in this region before falling under Ottoman rule is testified by numerous churches from ancient and medieval times discovered on the territory of the Diocese. The highest concentration was in the Bihać Deanery area.

The Ottoman conquest that brought the demolition of Catholic churches and the islamization of the population, almost completely destroyed the presence of the Catholic Church in these areas, with the exception of southern regions around Livno. City of Bihać resisted the longest, until 1591. From the time of the Ottoman conquest, the pastoral clergy in these parts were almost exclusively Bosnian Franciscans. On the Livno area was recorded the presence of Glagolitic Catholic secular priests who celebrated the Slavic liturgy. The bishops did not dare to come to parts of their dioceses that fell under Turkish rule. That is why, in 1735, instead of the existing dioceses, the Holy See founded the Apostolic Vicariate in Ottoman Bosnia (Vicariatus Apostolicus Bosniae Othomanae). The Catholic church in Banja Luka was particularly hard hit during the War of the Holy League (1683–1699). In 1737 parish church in Banja Luka was burned and numerous believers migrated to the Habsburg possessions.

St. Francis' Church in Mahovljani was built in 1902 for the newly arrived Italian Catholics

After Bosnia Vilayet came under the Austro-Hungarian rule in 1878, Pope Leo XIII restored the vilayet's church hierarchy. In Ex hac augusta, his 5 July 1881 apostolic letter, Leo established a four-diocese ecclesiastical province in Bosnia and Herzegovina and abolished the previous apostolic vicariates. Sarajevo, formerly Vrhbosna, became the archdiocesan and metropolitan seat. Its suffragan dioceses became the new dioceses of Banja Luka and Mostar and the existing Diocese of Trebinje-Mrkan.[3]

After the renewal of the regular hierarchy, the Diocese was governed by the apostolic nuncio in Vienna, and from 1883 to 1884, by the Archbishop of Vrhbosna, Josip Stadler, who served as an apostolic administrator of the Diocese.

At the time of its founding, the Diocese had some 36,000 believers. This number has accelerated rapidly with the arrival of the Austrian authorities. During the next decades, numerous Poles, Italians, Germans, Czechs and others moved in the area of the Diocese.

During the Second World War and after the war, the Diocese was catastrophically harmed. One third of all the parishes (13) have completely perished, in 10 of parishes a number of parishioners dropped significantly, and all the others were seriously injured. With a large number of killed believers, the diocese suffered severe loss of priests. During the war and after the war, at least 30 priests were killed. The Holy See started the process of beatification of 4 of them on 21 December 2014: Juraj Gospodnetić, Waldemar Maximilian Nestor, Antun Dujlović and Krešimir Barišić.[4]

Diocese of Banja Luka has a population of 550,300. As of 2012, 35,428 (6.44% of the population) are Roman Catholics.

Historical Roman Catholic population

The historical Roman Catholic population is given in the following chart:

Mariastern Monastery (established in 1869)

The Diocese of Banja Luka is home to a small number of religious orders and congregations. While there are not as many today in 2013 as there were in 1950, they still make up a large population of the diocese.

In 1950, there were 71 religious priests, 4 male religious, 310 nuns and sisters ministering in the Diocese.

As of 2013, 47 priests of religious orders, 92 religious sisters and nuns minister in the diocese.

• Blessed Ivan Merz – Bosnian-Croatian lay academic, beatified by Pope John Paul II on a visit at Banja Luka, Bosnia and Herzegovina on June 23, 2003. Ivan Merz promoted the liturgical movement in Croatia and together with Ivo Protulipac created a movement for the young people, "The Croatian union of the Eagles" ("Hrvatski orlovski savez"), inspired by the "Eucharistic Crusade," which he had encountered in France.

Wikisource has the text of the 1913 Catholic Encyclopedia article Diocese of Banjaluka.

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