| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 49.9 | Appointed | Joseph Adam Arco † | Archbishop (Personal Title) of Seckau, Austria | Bishop |
| 47.5 | Appointed | Jan Benisławski † | Coadjutor Archbishop of Mohilev, Belarus |
| 47.5 | Appointed | Jan Benisławski † | Titular Archbishop of Gadara | Coadjutor Archbishop of Mohilev, Belarus |
| Born | Joannes Bocheński † | Grasbenec | Auxiliary Bishop of Lviv (Ukrainian), Ukraine |
| 24.0 | Ordained Priest | Aeneas Chisholm † | Priest | Vicar Apostolic of Highland District, Scotland, Great Britain |
| 13.1 | Professed | Francesco Colangelo, C.O. † | Member of Confederation of Oratorians of St. Philip Neri | Bishop of Castellammare di Stabia, Italy |
| 67.6 | Died | Nicolaus Difnico † | Bishop of Šibenik (Knin), Croatia |
| Born | Alfonso-Maria di Donato, O.F.M. † | Neapel | Vicar Apostolic of Scen-Si (Chen-si, Shensi), China |
| 64.4 | Died | Giovanni Tommaso Gallarati † | Titular Bishop of Paros |
| 65.0 | Died | Donato Antonio Giannelli † | Bishop of Bisceglie, Italy |
| Born | Denys Michel Hardaya † | Alep | Bishop of Alep [Beroea, Halab] (Syrian), Syria |
| 41.8 | Appointed | Johann Valentin Heimes † | Auxiliary Bishop of Mainz, Germany | Auxiliary Bishop of Worms, Germany |
| 76.2 | Died | Joaquín Herrera Bárcena, O.S.B. † | Bishop of Islas Canarias {Canary Islands}, Spain |
| Born | James Keating † | Coolnahorna | Bishop of Ferns, Ireland |
| Died | Peter Kilkelly, O.P. † | Bishop of Kilmacduagh, Ireland |
| 49.0 | Appointed | Iraklij Listovskyj † | Bishop of Foreign Diocese |
| 23.8 | Ordained Priest | Andrea Portanova † | Priest | Bishop of Lucera, Italy |
| 32.9 | Incardinated | Johann Nepomuk von Dankesreither † | Priest of Wien {Vienna}, Austria | Bishop of Sankt Pölten, Austria |
| 5 Jan | 43.7 | Ordained Bishop | Pierre de Séguiran † | Bishop of Nevers, France |
| 6 Jan | | Born | Giuseppe Ugolini † | Macerata, Italy | Cardinal, Priest of the Roman Curia - Other |
| 11 Jan | 58.5 | Died | Jacques-Thomas Astesan, O.P. † | Archbishop of Oristano, Italy |
| 81.0 | Died | Jakub Stefan Augustynowicz † | Archbishop of Lviv (Armenian), Ukraine | Coadjutor Archbishop |
| 68.5 | Succeeded | Jakub Walerian Tumanowicz † | Archbishop of Lviv (Armenian), Ukraine |
| 16 Jan | 67.6 | Succeeded | Antoni Wacław Betański † | Bishop of Przemyśl, Poland |
| Born | Jean-Baptiste Bouvier † | Saint-Charles-la-Fôret | Bishop of Le Mans, France |
| 76.8 | Died | Józef Tadeusz Kierski † | Bishop of Przemyśl, Poland |
| 26 Jan | | Born | Antonio Michele Vaglio † | Galatone | Bishop of Venosa, Italy |
| 31 Jan | 67.3 | Died | João Cosme da Cunha (de Nossa Senhora da Porta), O.C.S.A. † | Cardinal, Archbishop of Évora, Portugal |
| 2 Feb | 42.4 | Ordained Bishop | Cayetano Da Annunciação Brandão, T.O.R. † | Bishop of Belém do Pará, Brazil | Archbishop of Braga, Portugal |
| 51.5 | Ordained Bishop | Alexandre de Gouvea (Gouveia), T.O.R. † | Bishop of Peking [Beijing], China |
| 17 Feb | 72.1 | Installed | Giuseppe Maria Capece Zurlo, C.R. † | Cardinal-Priest of San Bernardo alle Terme | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 64.5 | Appointed | Tommaso Maria Ghilini † | Cardinal, Cardinal-Priest of Santa Maria sopra Minerva |
| 49.2 | Appointed | Ildefonso Molina Santaella † | Bishop of Ciudad Rodrigo, Spain |
| 48.8 | Appointed | Antonio Sentmanat y Castellá † | Bishop of Avila, Spain | Cardinal, Patriarch of West Indies, Spain |
| 66.4 | Appointed | Alonso de Solís Marroquín y Gragera, O.S. † | Bishop of Badajoz, Spain |
| 19 Feb | 78.9 | Died | Alfonso Sozy Carafa, C.R.S. † | Bishop of Lecce, Italy |
| 21 Feb | | Born | Francesco Serra Cassano † | Napoli | Cardinal, Archbishop of Capua, Italy |
| 23 Feb | 23.3 | Ordained Priest | Inocêncio António das Neves Portugal, O. Carm. † | Priest | Bishop-Elect of Faro {Algarve}, Portugal |
| 24 Feb | 45.8 | Ordained Bishop | Alexandre da Sagrada Familia Ferreira da Silva, O.F.M. † | Bishop of Malacca, Singapore | Bishop of Angra, Portugal |
| 55.9 | Ordained Bishop | Vicente Ferreira da Rocha, O.P. † | Bishop of Castelo Branco, Portugal |
| 56.0 | Ordained Bishop | José da Avé-Maria Leite da Costa e Silva, O.SS.T. † | Bishop of Angra, Portugal |
| 48.8 | Ordained Bishop | Antonio Sentmanat y Castellá † | Bishop of Avila, Spain | Cardinal, Patriarch of West Indies, Spain |
| 25 Feb | | Born | Franz Großmann (Grossmann) † | Robawen | Auxiliary Bishop of Warmia (Ermland), Poland |
| 28 Feb | | Born | Alexis Billiet † | Les Chapelles | Cardinal, Archbishop of Chambéry, France |
| 1 Mar | 85.2 | Died | Charles-François-Alexandre Cardevac de Gouy d’Havrincourt † | Bishop of Perpignan-Elne, France |
| 51.9 | Succeeded | Jean-Gabriel d’Agay † | Bishop of Perpignan-Elne, France |
| 7 Mar | 55.9 | Installed | Vicente Ferreira da Rocha, O.P. † | Bishop of Castelo Branco, Portugal |
| 9 Mar | 45.2 | Ordained Bishop | Camillo de Simeoni † | Cardinal, Bishop of Nepi e Sutri, Italy |
| 11 Mar | 15.5 | Professed | Antônio de São José Bastos, O.S.B. † | Member of Order of Saint Benedict | Bishop of Olinda, Brazil |
| 12 Mar | 74.5 | Died | Domenico Volpe † | Bishop of Sant’Angelo dei Lombardi e Bisaccia, Italy |
| 13 Mar | 74.5 | Died | Leopold Ernst von Firmian † | Cardinal, Bishop of Passau, Germany |
| 14 Mar | 65.8 | Died | Alessandro Pisani † | Bishop of Piacenza, Italy |
| 15 Mar | 35.5 | Professed | Michal Mateusz Stadnicki, O.S.B.M. † | Priest of Basilian Order of Saint Josaphat (Order of St. Basil the Great) | Bishop of Foreign Diocese |
| 22 Mar | | Born | Gábor Balassa † | Mencshely | Bishop of Szombathely, Hungary |
| 23 Mar | 74.3 | Ordained Bishop | Manuel Buenaventura Figueroa Barrero † | Titular Archbishop of Laodicea in Phrygia | Patriarch of West Indies, Spain |
| 24 Mar | | Born | Gabriel Smicsiklasz † | Szossicze | Bishop of Križevci (Kreutz) (Križevci), Croatia |
| 25 Mar | | Born | Pedro José Zarandia y Endara † | Lesaca | Bishop of Huesca, Spain |
| 3 Apr | 74.3 | Died | Manuel Buenaventura Figueroa Barrero † | Patriarch of West Indies, Spain |
| Born | Joseph Ambrosius Geritz † | Seeburg | Bishop of Warmia (Ermland), Poland |
| 4 Apr | 72.5 | Died | Francesco Angelo Pastrovich, O.F.M. Conv. † | Bishop of Viterbo e Tuscania, Italy |
| 67.0 | Died | Joaquín Antonio Sánchez Ferragudo † | Bishop of Lérida, Spain |
| 5 Apr | 25.5 | Ordained Priest | Fortunatus Paternò † | Priest | Titular Bishop of Orthosias in Caria |
| 78.1 | Died | Nicola Spedalieri † | Bishop of Oppido Mamertina, Italy |
| 8 Apr | | Born | Moritz-Fabian Roten † | Raron | Bishop of Sion {Sitten}, Switzerland |
| 9 Apr | 56.1 | Selected | Emmanuel Felix Soares (de Santa Catarina), O.C.D. † | Archbishop of Goa, India |
| 18 Apr | 81.2 | Died | Giovanni Carmine Pellerano, O.S.Io.Hieros. † | Bishop Emeritus of Malta |
| 19 Apr | 24.1 | Ordained Priest | Antoine de La Grange de Pons † | Priest | Bishop of Moulins, France |
| 28.0 | Ordained Priest | Charles Montault des Isles † | Priest | Bishop of Angers, France |
| 21 Apr | 26.5 | Ordained Priest | Giuseppe de Nobili † | Priest | Archbishop of Lucca, Italy |
| 23 Apr | | Born | Gaetano Tigani † | Soriano | Bishop of Anglona-Tursi, Italy |
| 25 Apr | 68.3 | Died | François de Révol † | Bishop of Oloron (Oloron-Sainte-Marie), France |
| 26 Apr | | Born | Martino Orsino (Ursino) † | Catania | Bishop of Patti, Italy |
| 27 Apr | 86.7 | Died | Giuseppe Pozzobenelli † | Cardinal, Archbishop of Milano {Milan}, Italy |
| 13 May | | Appointed | Daniel Delany † | Coadjutor Bishop of Kildare and Leighlin, Ireland | Bishop |
| Appointed | Daniel Delany † | Titular Bishop of Dausara | Bishop of Kildare and Leighlin, Ireland |
| 14 May | 74.7 | Died | Francisco Laso Santos de San Pedro † | Bishop of Santander, Spain |
| 77.5 | Resigned | Isidoro Sanchez de Luna, O.S.B. † | Archbishop of Salerno, Italy | Archbishop Emeritus |
| 19 May | 49.3 | Selected | Joseph Franz Anton von Auersperg † | Cardinal, Bishop of Passau, Germany |
| 21 May | 62.4 | Died | Claude-Marc-Antoine d’Apchon de Corgenon † | Archbishop of Auch, France |
| 23 May | 66.8 | Died | Juan García Montenegro † | Bishop of Urgell, Spain |
| Born | Johann Peter von Richarz † | Würzburg | Bishop of Augsburg, Germany |
| 26 May | 22.4 | Ordained Deacon | Aleksandar Alagović † | Deacon | Bishop of Zagreb (Agram), Croatia |
| 22.6 | Ordained Deacon | Alexander (Sandor) Rudnay Divékújfalusi † | Deacon | Cardinal, Archbishop of Esztergom, Hungary |
| 27 May | | Born | Luigi Frezza † | Civita Lavinia | Cardinal, Official Emeritus of the Secretariat of State |
| Jun | 24.1 | Ordained Priest | Dominique-Georges-Frédéric Dufour de Pradt † | Priest | Archbishop Emeritus of Mechelen, Belgium |
| 1 Jun | 66.3 | Ordained Bishop | Antonius Bucci † | Titular Bishop of Orthosias in Caria |
| 58.1 | Ordained Bishop | Ludwik Stanisław Górski, Sch. P. † | Titular Bishop of Caesaropolis | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 2 Jun | | Born | Giuseppe Maria Maniscalco, O.F.M. † | Alessandria della Rocca | Bishop of Caltagirone, Italy |
| 4 Jun | 22.8 | Ordained Priest | Annibale Francesco Clemente Melchiore Girolamo Nicola della Genga † | Priest | Pope (Roma {Rome}, Italy) |
| 5 Jun | 61.3 | Died | Juan Molina Lario y Navarro † | Bishop of Málaga, Spain |
| 10 Jun | 28.7 | Ordained Deacon | Franciszek Skarbek von Malczewski † | Deacon | Archbishop of Warszawa {Warsaw}, Poland |
| 13 Jun | | Born | Basilio Antonio Carrasco y Hernando, O. de M. † | Durón | Bishop of Ibiza, Spain |
| 14 Jun | 23.0 | Ordained Priest | Karl Rudolf von Buol-Schauenstein † | Priest of Chur, Switzerland | Bishop of Chur-Sankt Gallen, Switzerland |
| 24.0 | Ordained Priest | Lorenzo D’Antoni † | Priest | Titular Bishop of Germanicopolis |
| 23.2 | Ordained Priest | Josef von Hommer † | Priest of Trier, Germany | Bishop |
| 28.7 | Ordained Priest | Franciszek Skarbek von Malczewski † | Priest | Archbishop of Warszawa {Warsaw}, Poland |
| 15 Jun | 39.3 | Selected | François de Fontanges † | Bishop of Nancy, France | Bishop of Autun, France |
| 39.4 | Selected | Louis-Apolinaire de La Tour du Pin-Montauban † | Archbishop of Auch, France | Bishop of Troyes, France |
| 18 Jun | 56.3 | Selected | Giacinto Rolfi, O.S.A. † | Bishop of Iglesias, Italy |
| 82.7 | Died | Ferenc Zichy † | Bishop of Győr (Raab), Hungary |
| 20 Jun | | Born | Manuel López Santisteban † | Guadix | Bishop Emeritus of Avila, Spain |
| 22 Jun | 61.0 | Ordained Bishop | Juan Manuel Antonio Ramos Lora, O.F.M. † | Bishop of Mérida, Venezuela |
| 60.7 | Ordained Bishop | Rafael José Verger y Suau, O.F.M. † | Bishop of Linares o Nueva León, Nuevo León, México |
| 23 Jun | 57.5 | Resigned | Francisco da Assumpção e Brito, O.S.A. † | Archbishop of Goa, India | Archbishop Emeritus |