| Date | Age | Event | Bishop | Title | Current Title |
| 2 Jul | 42.7 | Professed | Francesco Felice Tiberi, C.O. † | Priest of Confederation of Oratorians of St. Philip Neri | Bishop of Valva e Sulmona, Italy |
| 5 Jul | 84.8 | Died | Arthur-Richard Dillon † | Archbishop of Narbonne, France |
| 6 Jul | 25.5 | Ordained Priest | Francisco Javier Luna-Pizarro y Pacheco de Chávez † | Priest | Archbishop of Lima, Peru |
| 8 Jul | 42.5 | Appointed | Louis-Charles-Auguste Hébert, M.E.P. † | Coadjutor Superior of Karnatic Mission / Pondicherry, India | Vicar Apostolic of Madurai and Coromandel Coast, India |
| 42.5 | Appointed | Louis-Charles-Auguste Hébert, M.E.P. † | Titular Bishop of Halicarnassus | Vicar Apostolic of Madurai and Coromandel Coast, India |
| 10 Jul | 18.8 | Professed | Andrea Maria Rispoli, C.Ss.R. † | Member of Congregation of the Most Holy Redeemer | Bishop of Squillace, Italy |
| 12 Jul | 82.4 | Died | Joseph-François d’Andigné de la Chasse † | Bishop Emeritus of Chalons-sur-Saône, France |
| 16 Jul | 55.5 | Selected | Nicolas-Marie Fournier de la Contamine † | Bishop of Montpellier, France |
| 69.3 | Selected | Fabien-Sébastien Imberties † | Bishop of Autun, France |
| 46.5 | Selected | Gaspard-Jean-André Jauffret † | Bishop of Metz, France |
| 21 Jul | 63.4 | Selected | Dávid Zsolnay † | Bishop of Knin (Tinin), Croatia |
| 23 Jul | 68.0 | Died | Michele Antonio Aymerich de Villamar † | Bishop of Ales e Terralba, Italy |
| 65.3 | Died | Johann Valentin Heimes † | Auxiliary Bishop of Worms, Germany |
| 24 Jul | 72.5 | Appointed | Iraklij (Herakliusz) Listovskyj (Lissowski), O.S.B.M. † | Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 26 Jul | | Born | Juan José Castañer y Rivas † | | Bishop of Vic, Spain |
| Born | Antonio Palau y Térmens † | | Bishop of Barcelona, Spain |
| 31 Jul | | Born | Pierre Apelian † | | Bishop of Marasc (Armenian), Turkey |
| 3 Aug | 27.0 | Ordained Priest | Nicolas-Augustin de la Croix d’Azolette † | Priest | Archbishop Emeritus of Auch, France |
| 5 Aug | 21.4 | Ordained Deacon | Ferenc di Paolo de Nádasdy-Fogaras † | Deacon | Archbishop of Kalocsa, Hungary |
| 6 Aug | 78.1 | Died | Gaetano Maria Bonanno † | Bishop of Siracusa, Italy |
| 49.4 | Appointed | Antonio Gabriele Severoli † | Apostolic Nuncio to Austria | Cardinal, Bishop of Viterbo e Tuscania, Italy |
| 10 Aug | 63.8 | Ordained Bishop | José Jiménez † | Bishop of Cartagena (en España) |
| 55.8 | Ordained Bishop | Manuel Vicente Martínez y Jiménez † | Bishop of Astorga, Spain | Archbishop of Zaragoza, Spain |
| Born | Charles Pius Montgomery, O.P. † | | Priest of Order of Friars Preachers |
| 36.9 | Ordained Bishop | Cajetan Pires Pireira, C.M. † | Bishop of Nanking [Nanjing], China |
| 12 Aug | 53.5 | Appointed | Bernard-Claude Panet † | Coadjutor Bishop of Québec, Canada | Archbishop of Québec, Canada |
| 53.5 | Appointed | Bernard-Claude Panet † | Titular Bishop of Saldae | Archbishop of Québec, Canada |
| 13 Aug | | Born | Giuseppe Maria Fanelli † | | Bishop of Sant’Angelo dei Lombardi e Bisaccia, Italy |
| 17 Aug | 63.8 | Died | Francesco Bugliari † | Titular Bishop of Thagaste |
| 73.6 | Died | [Étienne Delcher] † | Bishop Emeritus of [Haute-Loire (Constitutional), France] |
| Born | Peter Richard Kenrick † | | Archbishop Emeritus of Saint Louis, Missouri, USA |
| 24.5 | Ordained Priest | Ferdinando Minucci † | Priest of Firenze {Florence}, Italy | Archbishop |
| 23 Aug | 23.9 | Ordained Deacon | Johann Michael Leonhard † | Deacon of Wien {Vienna}, Austria | Bishop of Austria, Military |
| 24 Aug | 23.9 | Ordained Priest | Johann Michael Leonhard † | Priest of Wien {Vienna}, Austria | Bishop of Austria, Military |
| 26 Aug | 50.8 | Confirmed | Ramón José Arce † | Patriarch of West Indies, Spain | Patriarch Emeritus |
| 66.7 | Confirmed | Teodoro Botelho Homen Bernardes † | Archbishop of Cranganore (Angamala), India |
| 49.4 | Appointed | Domenico Buttaoni † | Bishop of Fabriano e Matelica, Italy |
| 44.1 | Appointed | Giovanni Francesco Capelletti † | Bishop of Ascoli Piceno, Italy |
| Born | Andrea Casasola † | | Archbishop of Udine, Italy |
| 49.4 | Confirmed | Godfried Joseph Crüts van Creits † | Bishop of Sankt Pölten, Austria |
| 65.0 | Confirmed | José da Costa e Torres † | Archbishop of Braga, Portugal |
| 65.9 | Appointed | Custodio Angel Díaz Merino, O.P. † | Bishop of Cartagena, Colombia |
| 55.6 | Confirmed | Nicolas-Marie Fournier de la Contamine † | Bishop of Montpellier, France |
| 51.5 | Appointed | Gregorio Hermida y Gamba (Camba) † | Bishop of Oviedo, Spain |
| 69.4 | Confirmed | Fabien-Sébastien Imberties † | Bishop of Autun, France |
| 46.7 | Confirmed | Gaspard-Jean-André Jauffret † | Bishop of Metz, France |
| 66.0 | Confirmed | Anton Mandić † | Bishop of Bosna (Djakovo) et Srijem, Croatia |
| 55.2 | Appointed | Andrea Mastai-Ferretti † | Bishop of Pesaro, Italy |
| 47.5 | Appointed | Diego Antonio Navarro Martín de Villodras † | Bishop of Concepción, Chile | Archbishop of La Plata o Charcas, Bolivia |
| 57.7 | Confirmed | Lipót Perlaki Somogy † | Bishop of Szombathely, Hungary |
| 65.0 | Appointed | Ignacy Jan Zygmunt von Raczyński † | Archbishop of Gniezno, Poland | Archbishop Emeritus |
| 38.5 | Confirmed | José Caetano da Silva Coutinho † | Bishop of São Sebastião do Rio de Janeiro, Brazil |
| 68.1 | Confirmed | Józef Ignác de Vilt (Wilt) † | Bishop of Győr (Raab), Hungary |
| 27 Aug | | Born | Ivan Josip Vitezić † | | Bishop of Krk (Veglia), Croatia |
| 29 Aug | 70.0 | Selected | Sandor Bodonyi † | Bishop of Beograd (-Smederevo), Serbia |
| 20.8 | Selected | Karl Ambrose Ferdinand von Habsburg † | Bishop of Vác, Hungary | Archbishop of Esztergom, Hungary |
| 30 Aug | | Born | Jacques-Antoine-Claude-Marie Boudinet † | | Bishop of Amiens, France |
| 31 Aug | 49.5 | Ordained Bishop | Domenico Buttaoni † | Bishop of Fabriano e Matelica, Italy |
| 55.2 | Ordained Bishop | Andrea Mastai-Ferretti † | Bishop of Pesaro, Italy |
| 4 Sep | | Born | Claude-Thierry Obré † | | Auxiliary Bishop Emeritus of Beauvais (-Noyon-Senlis), France |
| 6 Sep | | Born | John McCaffrey † | | Former Bishop-Elect of Charleston, South Carolina, USA |
| 12 Sep | 45.9 | Selected | Samuel Vulcan † | Bishop of Oradea Mare {Gran Varadino} (Romanian), Romania |
| 17 Sep | 22.8 | Ordained Priest | Celestino Maria Cocle, C.Ss.R. † | Priest of Congregation of the Most Holy Redeemer | Rector Major Emeritus of Patrae (Veters) |
| 19 Sep | 80.0 | Died | Francisco de Ibarra y Herrera † | Archbishop of Caracas, Santiago de Venezuela |
| 20 Sep | 22.3 | Ordained Priest | Giovanni Battista de Albertis † | Priest | Bishop Emeritus of Ventimiglia, Italy |
| 24.0 | Ordained Priest | Camillo Milana † | Priest | Bishop of Nicosia, Italy |
| 21 Sep | | Born | Giulio Arrigoni, O.F.M. Ref. † | | Archbishop of Lucca, Italy |
| 63.7 | Died | Francisco Leitão de Carvalho, O. Cist. † | Bishop of Beja, Portugal |
| 22 Sep | | Born | Johann Baptist Orbin † | | Archbishop of Freiburg im Breisgau, Germany |
| 28 Sep | 52.0 | Ordained Bishop | Luis La Encina Díaz y Pereiro † | Bishop of Arequipa, Peru |
| 66.1 | Ordained Bishop | Anton Mandić † | Bishop of Bosna (Djakovo) et Srijem, Croatia |
| 68.3 | Died | Felice Paoli † | Bishop of Recanati e Loreto, Italy |
| 1 Oct | | Born | Giacinto Maria Barberi, O.P. † | | Bishop of Nicastro, Italy |
| 43.9 | Died | Etienne-Alexandre-Jean-Baptiste-Marie Bernier † | Bishop of Orléans, France |
| Born | Urban Nikola Bogdanović, O.F.M. Obs. † | | Apostolic Administrator of Skopje, North Macedonia |
| 5 Oct | 49.5 | Ordained Bishop | Godfried Joseph Crüts van Creits † | Bishop of Sankt Pölten, Austria |
| Born | Josef Freusberg † | | Auxiliary Bishop of Paderborn, Germany |
| 6 Oct | 54.3 | Appointed | Rainieri Alliata † | Archbishop of Pisa, Italy |
| 64.0 | Confirmed | José Joaquim da Cunha Azevedo Coutinho † | Bishop of Elvas, Portugal | Bishop Emeritus |
| 37.5 | Confirmed | José Maria de Araújo, O.S.H. † | Bishop of Olinda, Brazil |
| 37.8 | Appointed | Pietro Fazzi † | Bishop of San Miniato, Italy |
| 65.6 | Appointed | Filippo Ganucci † | Bishop of Livorno, Italy |
| 32.9 | Appointed | Giuseppe Gaetano Incontri † | Bishop of Volterra, Italy |
| 56.0 | Appointed | Cayetano Pallás, O.P. † | Bishop of Nueva Segovia, Philippines |
| 70.9 | Selected | Filippo Trigona † | Bishop of Siracusa, Italy |
| 63.6 | Appointed | Dávid Zsolnay † | Auxiliary Bishop of Veszprém, Hungary | Bishop of Knin (Tinin), Croatia |
| 63.6 | Confirmed | Dávid Zsolnay † | Bishop of Knin (Tinin), Croatia |
| 8 Oct | 24.0 | Entered | Benedict Joseph Fenwick, S.J. † | Member of Society of Jesus | Bishop of Boston, Massachusetts, USA |
| 10 Oct | 66.2 | Died | Michele de Angelis † | Bishop of Gravina (di Puglia), Italy |
| 24.5 | Ordained Priest | Angelo Mai † | Priest of Orvieto, Italy | Cardinal, Librarian of the Vatican Library |
| 12 Oct | 37.8 | Ordained Bishop | Pietro Fazzi † | Bishop of San Miniato, Italy |
| 32.9 | Ordained Bishop | Giuseppe Gaetano Incontri † | Bishop of Volterra, Italy |
| 16 Oct | | Born | Antonio Martín y Bienes, O.SS.T. † | | Prior General of Order of the Most Holy Trinity |
| 19 Oct | 51.7 | Ordained Bishop | Gregorio Hermida y Gamba (Camba) † | Bishop of Oviedo, Spain |
| 46.1 | Ordained Bishop | Antonio Maria Trigona † | Titular Bishop of Hierocaesarea | Archbishop Emeritus of Messina, Italy |
| 20 Oct | 91.0 | Died | Mercuriale (Bartolomeo) Prati, O.S.B. † | Bishop of Forli, Italy |
| 23 Oct | 75.0 | Died | Carlo Luigi Buronzo del Signore † | Archbishop Emeritus of Torino {Turin}, Italy |
| 24 Oct | 64.7 | Selected | Michael Léopold Brigido von Marenfels und Bresoviz † | Archbishop (Personal Title) of Spiš, Slovakia | Bishop |
| Born | Maximilian Joseph von Tarnóczy † | | Cardinal, Archbishop of Salzburg, Austria |
| 27 Oct | 64.8 | Selected | Nicolás Videla del Pino † | Bishop of Salta, Argentina |
| 30 Oct | 73.0 | Died | Michelangelo della Peruta † | Bishop of Isernia, Italy |
| 1 Nov | 65.8 | Died | Vincenzo Nicola Pasquale Dentice, O.S.B. † | Archbishop of Cosenza, Italy |
| 57.9 | Ordained Bishop | Lipót Perlaki Somogy † | Bishop of Szombathely, Hungary |
| 75.5 | Died | Ludwig (Johann Georg) Zöschinger, C.R.S.A. † | Priest of Confederation of Canons Regular of St. Augustine |
| 8 Nov | | Born | Petrus Maria Vrancken † | | Vicar Apostolic Emeritus of Batavia, Indonesia |
| 10 Nov | 75.8 | Died | [André François Chaussy] † | Bishop |
| 16 Nov | | Born | Mariano Falcinelli Antoniacci, O.S.B. † | | Cardinal, Cardinal-Priest of San Marcello |
| 17 Nov | 70.2 | Confirmed | Sandor Bodonyi † | Bishop of Beograd (-Smederevo), Serbia |
| 49.8 | Appointed | Nicolás García Jerez, O.P. † | Bishop of Nicaragua |
| 21.0 | Confirmed | Karl Ambrose Ferdinand von Habsburg † | Bishop of Vác, Hungary | Archbishop of Esztergom, Hungary |
| 62.6 | Appointed | Karl Josef Jerome von Kolborn † | Auxiliary Bishop of Regensburg, Germany |
| 62.6 | Appointed | Karl Josef Jerome von Kolborn † | Titular Bishop of Capharnaum | Auxiliary Bishop of Regensburg, Germany |
| 18 Nov | 63.5 | Installed | Bartolomé María de las Heras Navarro † | Archbishop of Lima, Peru |
| 25 Nov | 77.3 | Died | Jean-François de La Marche † | Bishop of Saint-Pol-de-Léon, France |
| Born | Pasquale Taccone † | | Bishop of Teramo, Italy |
| 27 Nov | | Born | Marie-Jean-François Allard, O.M.I. † | | Vicar Apostolic Emeritus of Natal, South Africa |
| 2 Dec | 68.7 | Died | [Jacques-André-Simon Le Fessier] † | Bishop Emeritus of [Orne (Constitutional), France] |
| 3 Dec | | Born | Jacques-Marie-Achille Ginoulhiac † | | Archbishop of Lyon (-Vienne), France |
| 8 Dec | 55.9 | Ordained Bishop | Nicolas-Marie Fournier de la Contamine † | Bishop of Montpellier, France |
| 69.7 | Ordained Bishop | Fabien-Sébastien Imberties † | Bishop of Autun, France |
| 46.9 | Ordained Bishop | Gaspard-Jean-André Jauffret † | Bishop of Metz, France |
| 63.8 | Ordained Bishop | Dávid Zsolnay † | Auxiliary Bishop of Veszprém, Hungary | Bishop of Knin (Tinin), Croatia |
| 14 Dec | 24.0 | Ordained Priest | Giuseppe Grasser † | Priest | Bishop of Verona, Italy |
| 68.1 | Died | Antonino Riggio † | Bishop of Lipari, Italy |
| 17 Dec | 45.3 | Died | Dionisio Ridolfini Conestabile † | Bishop of Viterbo e Tuscania, Italy |
| 20 Dec | 24.0 | Ordained Priest | Domenico Maria Cilluffo e Costa † | Priest | Titular Archbishop of Adana |
| 22.9 | Ordained Priest | Giovanni Antonio Gianotti (Giannotti) † | Priest of Torino {Turin}, Italy | Bishop of Saluzzo, Italy |
| 24.6 | Ordained Priest | Antonio Monforte † | Priest | Bishop of Troia, Italy |
| 24.2 | Ordained Priest | Leone Niccolai, O. Cart. † | Priest of Carthusian Order | Bishop of Pistoia e Prato, Italy |
| 23.5 | Ordained Deacon | Johann Peter von Richarz † | Deacon of Würzburg, Germany | Bishop of Augsburg, Germany |
| 22 Dec | | Born | Simone Spilotros, O. Carm. † | | Bishop of Tricarico, Italy |
| 23 Dec | | Born | Karel Nöttig † | | Bishop of Brno, Czechia |
| 28 Dec | 24.0 | Ordained Priest | Benedetto Francesco Paolo Antonio Denti, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Caltagirone, Italy |
| 30 Dec | 24.1 | Ordained Priest | Pedro Alcántara Jiménez, O. Praem. † | Priest of Order of the Canons Regular of Premontre; Norbertines | Vicar Apostolic of Montevideo, Uruguay |