| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 74.0 | Died | Réné François Beauvau de Rivau † | Archbishop of Narbonne, France | Archbishop of Toulouse, France |
| 49.1 | Ordained Bishop | Pedro Cáceres Casado † | Bishop of Astorga, Spain |
| Died | Joseph-Pierre de Castellane † | Bishop of Fréjus, France |
| 45.9 | Ordained Bishop | Francisco Castillo Vintimilla † | Bishop of Barcelona, Spain | Bishop of Jaén, Spain |
| 52.0 | Appointed | Pietro Antonio Corsignani † | Bishop of Sulmona, Italy |
| Appointed | Valério do Sacramento † | Bishop of Angra, Portugal |
| 64.0 | Died | Stanisław Józef Hozjusz † | Bishop of Poznań, Poland |
| Appointed | Francesco Gaetano Incontri † | Bishop of Pescia, Italy | Archbishop of Firenze {Florence}, Italy |
| 46.8 | Appointed | Francesco Lanfreschi † | Archbishop of Acerenza e Matera, Italy | Archbishop Emeritus |
| Born | Franciscus Josephus Mikolitsch † | Ljubljana | Auxiliary Bishop of Ljubljana, Slovenia |
| Died | Matteo Odierna † | Bishop of Sulmona, Italy |
| 55.1 | Resigned | Domenico Silvio Passionei † | Apostolic Nuncio to Austria | Cardinal, Librarian of the Vatican Library |
| 55.9 | Ordained Bishop | Francisco Pérez Lozano, O.S.Bas. † | Bishop of Puerto Rico (Porto Rico) |
| Appointed | Giovanni Rossi † | Archbishop of Taranto, Italy | Archbishop of Acerenza e Matera, Italy |
| 11 Jan | | Born | Andrej (André) Szabó † | Alsomjek | Bishop of Košice, Slovakia |
| 20 Jan | | Born | Ippolito Antonio Vincenti Mareri † | Rieti | Cardinal, Bishop of Sabina, Italy |
| 27 Jan | 44.2 | Appointed | Miguel Aguiar † | Bishop of Ceuta, Spain |
| 49.2 | Appointed | Pedro Cáceres Casado † | Bishop of Astorga, Spain |
| 53.6 | Appointed | Ramón Francisco Agustín Eura, O.S.A. † | Bishop of Orense, Spain |
| 52.2 | Appointed | Andrés Mayoral Alonso de Mella † | Archbishop of Valencia, Spain |
| 53.7 | Appointed | José Esteban Noriega, O. Praem. † | Bishop of Solsona, Spain |
| 44.9 | Appointed | Carlo della Torre Rezzonico † | Cardinal-Deacon of S. Nicola in Carcere | Pope (Roma {Rome}, Italy) |
| 31 Jan | | Born | Tiberio Cortese † | Modena | Bishop of Modena, Italy |
| 2 Feb | | Born | William Gibson † | Stonecroft | Vicar Apostolic of Northern District, England, Great Britain |
| 17 Feb | 50.1 | Died | Tomás Ratto Ottonelli † | Bishop of Córdoba, Spain |
| 23 Feb | | Born | Stefano Bonsignore † | Busto | Bishop of Faenza, Italy |
| Born | Teodozy Wislocki, O.S.Bas. † | Ronerozniec | Bishop of Foreign Diocese |
| 1 Mar | | Born | Antonio Raffaele Dolci, O.P. † | Ragusa | Bishop of Stagnum |
| 2 Mar | 78.2 | Retired | Gregorio Téllez, O.F.M. Conv. † | Bishop of Ciudad Rodrigo, Spain | Bishop Emeritus |
| 3 Mar | 54.6 | Appointed | Domingo Pantaleón Álvarez de Abreu † | Bishop of Santo Domingo, Dominican Republic | Bishop of Tlaxcala, Tlaxcala, México |
| 55.4 | Appointed | Plácido Bailés Padilla, O.S.A. † | Bishop of Huesca, Spain | Bishop of Plasencia, Spain |
| 61.9 | Appointed | Clemente Comenge Avio † | Bishop of Ciudad Rodrigo, Spain |
| 54.8 | Appointed | Juan de Galabis, O. Praem. † | Archbishop of Santafé en Nueva Granada, Colombia |
| 84.0 | Appointed | José Flores Osorio † | Bishop of Cuenca, Spain |
| 63.6 | Appointed | Domenico Antonio Manfredi † | Bishop of Boiano, Italy |
| 56.1 | Appointed | Francisco Pérez Lozano, O.S.Bas. † | Bishop of Puerto Rico (Porto Rico) |
| 53.3 | Ordained Bishop | Domingo Antonio de Zatarain † | Bishop of León en Nicaragua |
| 4 Mar | | Born | Erasmus Dionys Krieger † | Masov | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 16 Mar | | Born | Józef Kazimierz Kossakowski † | | Coadjutor Bishop of Vilnius, Lithuania |
| 20 Mar | | Born | Joachim François Mamert de Conzié † | S. Martin du Mont | Archbishop of Tours, France |
| 23 Mar | 23.1 | Ordained Priest | Urbano Paracciani Rutili † | Priest of Roma {Rome}, Italy | Cardinal, Archbishop of Fermo, Italy |
| 25 Mar | 23.1 | Ordained Priest | Adam Dwerditsch † | Priest of Wien, Austria | Auxiliary Bishop |
| 31 Mar | 52.3 | Installed | Andrés Mayoral Alonso de Mella † | Archbishop of Valencia, Spain |
| 4 Apr | 71.7 | Died | José Luis Palos Bord, O.F.M. † | Bishop of Paraguay |
| 7 Apr | | Born | Francisco Ramón Larumbre † | Lumbier | Bishop of Tudela, Spain |
| 23.5 | Ordained Priest | Christoph Bartholomäus Anton Graf Migazzi † | Priest of Trento, Italy | Cardinal, Archbishop of Wien {Vienna}, Austria |
| 27.1 | Ordained Priest | Johann Mathäus Schweiberer † | Priest of Praha {Prague}, Czech Republic | Auxiliary Bishop |
| 20 Apr | 44.5 | Ordained Bishop | Miguel Aguiar † | Bishop of Ceuta, Spain |
| 53.9 | Ordained Bishop | José Esteban Noriega, O. Praem. † | Bishop of Solsona, Spain |
| 21 Apr | | Appointed | Francisco Gutiérrez Galeano, O. de M. † | Auxiliary Bishop of Lima, Peru |
| 26 Apr | | Born | Melchor Serrano Lázaro, Sch. P. † | Bádenas | Auxiliary Bishop of Valencia, Spain |
| 27 Apr | 53.8 | Ordained Bishop | Ramón Francisco Agustín Eura, O.S.A. † | Bishop of Orense, Spain |
| 1 May | 65.9 | Died | Felipe Molina y Figueroa † | Bishop of Nueva Caceres, Philippines |
| 4 May | 62.1 | Ordained Bishop | Clemente Comenge Avio † | Bishop of Ciudad Rodrigo, Spain |
| 5 May | 56.4 | Appointed | Andrés Cabrejas Molina † | Bishop of Jaén, Spain |
| 56.0 | Appointed | Jorge Casado Torreblanca † | Bishop of Urgell, Spain | Bishop Emeritus |
| 43.5 | Appointed | Melchiorre Delfico † | Bishop of Muro Lucano, Italy |
| 49.8 | Appointed | Juan Elías Gómez Terán † | Bishop of Orihuela, Spain |
| 57.0 | Appointed | Manuel Isidro Orozco Manrique de Lara † | Archbishop of Santiago de Compostela, Spain |
| 61.3 | Appointed | Pedro Salazar Góngora † | Bishop of Córdoba, Spain |
| 11 May | 43.5 | Ordained Bishop | Melchiorre Delfico † | Bishop of Muro Lucano, Italy |
| Ordained Bishop | Francesco Gaetano Incontri † | Bishop of Pescia, Italy | Archbishop of Firenze {Florence}, Italy |
| 17 May | | Born | Louis Charrier de La Roche † | Lyon | Bishop of Versailles, France |
| Born | Tomás de Roa y Alarcón † | Quilpolemu | Bishop of Concepción, Chile |
| 19 May | 39.1 | Appointed | José de Peralta Barrionuevo y Rocha Benavídez, O.P. † | Bishop of Buenos Aires, Argentina | Bishop of La Paz, Bolivia |
| 20 May | 45.4 | Appointed | Camillo Paolucci † | Apostolic Nuncio to Austria | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 3 Jun | 55.7 | Ordained Bishop | Plácido Bailés Padilla, O.S.A. † | Bishop of Huesca, Spain | Bishop of Plasencia, Spain |
| 56.5 | Ordained Bishop | Andrés Cabrejas Molina † | Bishop of Jaén, Spain |
| 56.1 | Ordained Bishop | Jorge Casado Torreblanca † | Bishop of Urgell, Spain | Bishop Emeritus |
| 23 Jun | 61.8 | Resigned | Pedro Ayala, O.P. † | Bishop of Avila, Spain | Bishop Emeritus |
| 55.6 | Elevated to Cardinal | Domenico Silvio Passionei † | Cardinal, Librarian of the Vatican Library |
| 39.2 | Confirmed | José de Peralta Barrionuevo y Rocha Benavídez, O.P. † | Bishop of Buenos Aires, Argentina | Bishop of La Paz, Bolivia |
| 47.3 | Appointed | Narciso Queralt † | Bishop of Avila, Spain |
| 27 Jun | 43.1 | Appointed | Krzysztof Michal Dobinski † | Auxiliary Bishop of Gniezno, Poland |
| 43.1 | Appointed | Krzysztof Michal Dobinski † | Titular Bishop of Serra | Auxiliary Bishop of Gniezno, Poland |
| 29 Jun | 49.9 | Ordained Bishop | Juan Elías Gómez Terán † | Bishop of Orihuela, Spain |
| 54.9 | Ordained Bishop | Jakob Sigismund von Reinach-Steinbrunn † | Bishop of Basel, Switzerland |
| 61.5 | Ordained Bishop | Pedro Salazar Góngora † | Bishop of Córdoba, Spain |
| 2 Jul | | Born | Jozef Ignác de Vilt (Wilt) † | Esztergom | Bishop of Győr, Hungary |
| 7 Jul | | Born | César-Guillaume de la Luzerne † | Paris | Cardinal, Bishop Emeritus of Langres, France |
| 11 Jul | 76.5 | Died | José Esquivel Castillejos, O.P. † | Auxiliary Bishop of Sevilla {Seville}, Spain |
| 14 Jul | 76.2 | Died | Francisco Laso de la Vega Córdova, O.P. † | Bishop of Plasencia, Spain |
| 19 Jul | | Born | Theodor Freiherr von Brabeck, O.S.B. † | Hamm | Bishop-Elect of Corvey, Germany |
| 22 Jul | 46.4 | Appointed | Francisco Castillo Vintimilla † | Bishop of Barcelona, Spain | Bishop of Jaén, Spain |
| 77.9 | Died | Wolfgang Hannibal Graf von Schrattenbach † | Cardinal, Bishop of Olomouc, Czech Republic |
| 23 Jul | 55.6 | Appointed | Domenico Silvio Passionei † | Cardinal-Priest of S. Bernardo alle Terme | Cardinal, Librarian of the Vatican Library |
| 5 Aug | | Born | Adeodatus Papikian, C.M.V. † | Giulfa, Perse | Bishop of Foreign Diocese |
| 17 Aug | 55.1 | Ordained Bishop | Domingo Pantaleón Álvarez de Abreu † | Bishop of Santo Domingo, Dominican Republic | Bishop of Tlaxcala, Tlaxcala, México |
| 18 Aug | | Born | Juan Agapito Ramírez Arellano † | Puente la Reina | Bishop of Gerona, Spain |
| 28 Aug | 53.0 | Appointed | Jean de Lolière-Puycontat, M.E.P. † | Vicar Apostolic of Siam, Thailand |
| 53.0 | Appointed | Jean de Lolière-Puycontat, M.E.P. † | Titular Bishop of Iuliopolis | Vicar Apostolic of Siam, Thailand |
| 31 Aug | 43.3 | Ordained Bishop | Krzysztof Michal Dobinski † | Titular Bishop of Serra | Auxiliary Bishop of Gniezno, Poland |
| 24.5 | Ordained Priest | Maximilian Reichsgraf von Hamilton † | Priest of Olomouc, Czech Republic | Bishop |
| 1 Sep | 64.9 | Resigned | Antonio Monroy Meneses, O. de M. † | Bishop of Santa Marta, Colombia | Bishop Emeritus |
| 3 Sep | 51.7 | Appointed | Guilherme de São José Antonio de Aranha † | Bishop of Belém do Pará, Brazil | Bishop Emeritus |
| 48.6 | Appointed | Manoel da Cruz Nogueira, O. Cist. † | Bishop of São Luís do Maranhão, Brazil | Bishop of Mariana, Brazil |
| 44.2 | Appointed | Antônio de Nossa Senhora do Desterro Malheiro, O.S.B. † | Bishop of Angola e Congo, Angola | Bishop of São Sebastião do Rio de Janeiro, Brazil |
| 62.6 | Appointed | João de Faro, O.F.M. † | Bishop of Santiago de Cabo Verde |
| 64.7 | Appointed | José de Fialho, O. Cist. † | Archbishop of São Salvador da Bahia, Brazil | Bishop of Guarda, Portugal |
| 69.3 | Appointed | Francesco Antonio Finy † | Cardinal-Priest of S. Maria in Trastevere | Cardinal, Bishop of Tivoli, Italy |
| 46.4 | Appointed | Luiz de Santa Teresa da Cruz Salgado de Castilho, O.C.D. † | Bishop of Olinda, Brazil |
| 71.2 | Appointed | Giorgio Spínola † | Cardinal, Cardinal-Bishop of Palestrina |
| 7 Sep | | Born | Agustín Ayestarán Landa † | Villafranca | Bishop of Córdoba, Spain |
| 21 Sep | 70.7 | Died | François Berger de Malissoles † | Bishop of Gap, France |
| 24 Sep | 55.5 | Ordained Bishop | Tomás Montaño y Aarón † | Bishop of Antequera, Oaxaca, México |
| 28 Sep | 76.3 | Died | José Pereira de Lacerda † | Cardinal, Bishop of Faro {Algarve}, Portugal |
| Oct | 46.2 | Died | Ramón Nogués † | Bishop of Jaca, Spain |
| 1 Oct | | Born | Karl Godefried Ritter von Rosenthal † | Zlabings | Auxiliary Bishop of Olomouc, Czech Republic |
| 4 Oct | 22.3 | Ordained Priest | Philipp Gotthard Graf von Schaffgotsch † | Priest of Wrocław, Poland | Bishop |
| 5 Oct | 62.7 | Ordained Bishop | João de Faro, O.F.M. † | Bishop of Santiago de Cabo Verde |
| 8 Oct | 58.7 | Appointed | Louis Néez, M.E.P. † | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viêt Nam |
| 58.7 | Appointed | Louis Néez, M.E.P. † | Titular Bishop of Comana Pontica | Vicar Apostolic of Western Tonking {Tonkino Occidentale}, Viêt Nam |
| 10 Oct | | Died | Alexandre de Alexandris, C.R.S.P. † | Vicar Apostolic of Cochin {Cocincina}, Viêt Nam |
| 11 Oct | | Born | José Boltas, O.F.M. † | Orán | Bishop of Urgell, Spain |
| 48.7 | Appointed | Jakob Ernst Graf von Liechtenstein-Kastelkorn † | Bishop of Olomouc, Czech Republic | Archbishop of Salzburg, Austria |
| 19 Oct | 47.6 | Ordained Bishop | Narciso Queralt † | Bishop of Avila, Spain |
| 28 Oct | | Born | Antonino Reggio † | Messina | Bishop of Lipari, Italy |
| 30 Oct | | Born | Bl. Jean-Marie du Lau d'Allemans † | Biras | Archbishop of Arles, France |
| 5 Nov | | Born | Johann Joseph Schüller von Ehrenthal † | Ostritz | Prefect of Meissen (Meißen) {Lusazia o Lausitz; Sassonia}, Germany |
| 7 Nov | | Born | Ferdinand-Maximilien-Mériadec de Rohan-Guémené † | Paris | Archbishop Emeritus of Cambrai, France |
| 8 Nov | 40.9 | Appointed | Ross Roe MacMahon (McMahon) † | Bishop of Clogher, Ireland | Archbishop of Armagh, Ireland |
| 12 Nov | 74.7 | Died | Teodor Andrzej Potocki † | Archbishop of Gniezno, Poland |
| 16 Nov | 48.4 | Appointed | José Cayetano Paravicino, O.F.M. † | Bishop of Paraguay | Bishop of Trujillo, Peru |
| 24 Nov | 58.6 | Appointed | José Bolaños Calzado, O.F.M. † | Titular Archbishop of Nisibis |
| 49.7 | Appointed | José Félix Valverde † | Bishop of Michoacán, Michoacán, México |
| 29 Nov | 46.8 | Appointed | Louis-Bernard de La Taste † | Bishop of Clamecy, France | Titular Bishop of Bethleem |
| 11 Dec | 53.9 | Appointed | Amand Buseck, O.S.B. † | Abbot of Fulda, Germany | Bishop |
| 14 Dec | 52.0 | Ordained Bishop | Guilherme de São José Antonio de Aranha † | Bishop of Belém do Pará, Brazil | Bishop Emeritus |
| 48.9 | Ordained Bishop | Manoel da Cruz Nogueira, O. Cist. † | Bishop of São Luís do Maranhão, Brazil | Bishop of Mariana, Brazil |
| 46.7 | Ordained Bishop | Luiz de Santa Teresa da Cruz Salgado de Castilho, O.C.D. † | Bishop of Olinda, Brazil |
| 19 Dec | 60.7 | Appointed | Pedro Manuel Dávila Cárdenas † | Bishop of Plasencia, Spain |
| 60.6 | Appointed | Juan García Abadiano † | Bishop of Caracas, Santiago de Venezuela |
| 69.0 | Appointed | Filippo Carlo Spada † | Titular Archbishop of Teodosia | Titular Patriarch of Alexandria of Egypt {Alessandria di Egitto} (-Eliopoli di Egitto-Port-Said) |
| 69.0 | Resigned | Filippo Carlo Spada † | Bishop of Pesaro, Italy | Titular Patriarch of Alexandria of Egypt {Alessandria di Egitto} (-Eliopoli di Egitto-Port-Said) |
| 31 Dec | 29.6 | Appointed | François de Fitz-James † | Bishop of Soissons, France |