| Date | Age | Event | Bishop | Title | Current Title |
| 1 Jul | 57.0 | Died | João Henriques Monis † | Bishop of Santiago de Cabo Verde |
| 48.7 | Appointed | Johann Georg Müller † | Bishop of Münster, Germany |
| 5 Jul | 52.4 | Appointed | Gabriele Ferretti † | Secretary of the Secretariat of State | Cardinal, Secretary Emeritus |
| 6 Jul | 46.7 | Appointed | St. Giustino Sebastiano Pasquale de Jacobis, C.M. † | Titular Bishop of Nilopolis | Vicar Apostolic of Abyssinia, Ethiopia |
| 46.7 | Appointed | St. Giustino Sebastiano Pasquale de Jacobis, C.M. † | Vicar Apostolic of Abyssinia, Ethiopia |
| 34.4 | Appointed | Alexander Smith † | Coadjutor Vicar Apostolic of Western District, Scotland, Great Britain |
| 34.4 | Appointed | Alexander Smith † | Titular Bishop of Parium | Coadjutor Vicar Apostolic of Western District, Scotland, Great Britain |
| 9 Jul | 42.5 | Appointed | William Delany † | Bishop of Cork, Ireland |
| Appointed | John Derry † | Bishop of Clonfert, Ireland |
| 34.7 | Appointed | James Alypius Goold, O.S.A. † | Bishop of Melbourne, Australia | Archbishop of Melbourne, Australia |
| 41.9 | Appointed | Joseph-Eugène-Bruno Guigues, O.M.I. † | Bishop of Bytown, Ontario, Canada | Bishop of Ottawa, Ontario, Canada |
| 77.4 | Died | Tomas Manoel de Noronha e Brito, O.P. † | Bishop Emeritus of Olinda, Brazil |
| 36.3 | Appointed | Joseph (José María Benito) Serra y Juliá, O.S.B. † | Bishop of Victoria, Australia | Coadjutor Bishop Emeritus of Perth, Australia |
| 11 Jul | 71.2 | Appointed | Luigi Emmanuele Nicolo Lambruschini, B. † | Cardinal-Bishop of Porto e Santa Rufina | Cardinal, Prefect of the Congregation of Rites |
| 12 Jul | 40.9 | Appointed | Peter Richard Kenrick † | Archbishop of Saint Louis, Missouri, USA | Archbishop Emeritus |
| 13 Jul | 36.6 | Appointed | Guillaume Douarre, S.M. † | Vicar Apostolic of Nouvelle-Calédonie, New Caledonia, Pacific (Oceania) |
| 16 Jul | 49.2 | Resigned | Célestine René Laurent Guynemer de la Hailandière † | Bishop of Vincennes, Indiana, USA | Bishop Emeritus |
| 19 Jul | | Born | John Joseph Hennessy † | Cloyne, Ireland | Bishop of Wichita, Kansas, USA |
| 22 Jul | | Born | Garabed (Carlo) Kiciurian † | Erzerum | Bishop Emeritus of Garin (Erzerum) (Armenian) |
| 30 Jul | 47.6 | Appointed | Aidan Devereaux † | Vicar Apostolic of Cape of Good Hope, Eastern District {Capo de Buona Speranza, Distretto Orientale}, South Africa |
| 47.6 | Appointed | Aidan Devereaux † | Titular Bishop of Paneade | Vicar Apostolic of Cape of Good Hope, Eastern District {Capo de Buona Speranza, Distretto Orientale}, South Africa |
| Appointed | Paolo Dodmassei † | Bishop of Pult, Albania | Bishop of Alessio (Alise), Albania |
| 48.8 | Appointed | Patrick Raymond Griffith, O.P. † | Vicar Apostolic of Cape of Good Hope, Western District {Capo di Buona Speranza, Distretto Occidentale}, South Africa |
| 48.8 | Appointed | Patrick Raymond Griffith, O.P. † | Titular Bishop of Palaeopolis in Pamphylia | Vicar Apostolic of Cape of Good Hope, Western District {Capo di Buona Speranza, Distretto Occidentale}, South Africa |
| Appointed | Angelo Parsi † | Vicar Apostolic of Valachia, Romania |
| Appointed | Angelo Parsi † | Titular Bishop of Nicopolis ad Iaterum | Vicar Apostolic of Valachia, Romania |
| Aug | | Died | Giovanni De Simone † | Bishop of Conversano, Italy |
| 1 Aug | | Born | Thomas James Conaty † | Kilnaleck, Ireland | Bishop of Monterey-Los Angeles, California, USA |
| 2 Aug | 41.7 | Appointed | Carlo Luigi Morichini † | Official of the Roman Curia - Other | Cardinal, Prefect of the Apostolic Signatura |
| Born | Francesco Uccellini (Ucellini) † | Lopud | Bishop of Kotor (Cattaro), Montenegro |
| 3 Aug | | Born | Giovanni Maria Zonghi † | Fabriano | President of the Pontifical Ecclesiastical Academy |
| 8 Aug | 22.7 | Ordained Priest | Giovanni Battista Tescari † | Priest of Vicenza, Italy | Bishop of Borgo San Donnino, Italy |
| 9 Aug | | Born | José Lourenço da Costa Aguiar † | Sobral | Bishop of Amazonas, Brazil |
| 11 Aug | 47.6 | Died | Francis George Mostyn † | Vicar Apostolic of Northern District, England, Great Britain |
| 40.5 | Succeeded | William Riddell † | Vicar Apostolic of Northern District, England, Great Britain |
| 12 Aug | 56.1 | Died | Thomas Griffiths † | Vicar Apostolic of London District, England, Great Britain |
| 14 Aug | | Born | Antonio Maria Jannotta † | Sant'Agata dei Goti | Bishop of Aquino, Sora, e Pontecorvo, Italy |
| 15 Aug | 42.6 | Ordained Bishop | William Delany † | Bishop of Cork, Ireland |
| Born | Jacobus Cornelis Meeuwissen, C.SS.R. † | | Vicar Apostolic Emeritus of Dutch Guyana-Suriname, Suriname, Antilles |
| Born | James Schwebach † | Platen, Luxembourg | Bishop of La Crosse, Wisconsin, USA |
| 19 Aug | 24.3 | Ordained Priest | Lothar von Kübel † | Priest of Freiburg im Breisgau, Germany | Apostolic Administrator |
| 20 Aug | 88.2 | Died | Jean-Armand Chaudru de Trélissac † | Bishop Emeritus of Montauban, France |
| 24 Aug | 48.9 | Ordained Bishop | Patrick Raymond Griffith, O.P. † | Titular Bishop of Palaeopolis in Pamphylia | Vicar Apostolic of Cape of Good Hope, Western District {Capo di Buona Speranza, Distretto Occidentale}, South Africa |
| Born | Theophile Meerschaert † | Russignies, Belgium | Bishop of Oklahoma, USA |
| 63.3 | Died | Ivan (Jan) Snihurskyj (Snigurski) † | Bishop of Przemyśl (Ukrainian), Poland |
| 27 Aug | | Born | Gustavo Giuseppe Waffelaert † | Rolleghem | Bishop of Brugge {Bruges}, Belgium |
| 29 Aug | | Born | Sebastian Gebhard Messmer † | Goldach, Switzerland | Archbishop of Milwaukee, Wisconsin, USA |
| 45.1 | Appointed | Nicholas Patrick Stephen (Nicolás Patricio Esteban) Wiseman † | Coadjutor Vicar Apostolic of London District, England, Great Britain | Cardinal, Archbishop of Westminster, England, Great Britain |
| 30 Aug | | Born | Ramón Barberá y Boada † | Alcover | Bishop of Palencia, Spain |
| 23.0 | Ordained Priest | Imrich Bende † | Priest | Bishop of Nitra, Slovakia |
| Born | Konrad von Busch † | Billigheim | Bishop of Speyer, Germany |
| 4 Sep | | Born | Wilhelm Schneider † | Gerlingen | Bishop of Paderborn, Germany |
| 5 Sep | 52.5 | Installed | Bartolomeo Carlo Romilli † | Archbishop of Milano {Milan}, Italy |
| 7 Sep | 32.0 | Ordained Priest | John Baptiste Miège, S.J. † | Priest of Society of Jesus | Vicar Apostolic Emeritus of Leavenworth, Kansas, USA |
| 13 Sep | 48.6 | Appointed | Edoardo Hurmuz † | Titular Bishop of Siraces |
| 18 Sep | | Born | Ramón Plaza y Blanco † | Santa María del Campo Rus | Bishop of Orihuela, Spain |
| 25.5 | Ordained Priest | Isidoro Valls y Pascual † | Priest | Bishop of Gerona, Spain |
| 19 Sep | | Born | Tomás Jenaro de Cámara y Castro, O.S.A. † | Torrecilla de Cameros | Bishop of Salamanca, Spain |
| 21 Sep | | Ordained Bishop | John Derry † | Bishop of Clonfert, Ireland |
| 22 Sep | | Born | Enrique Almaraz y Santos † | La Vellés | Cardinal, Archbishop of Toledo, Spain |
| 24 Sep | 41.7 | Appointed | Camillo Di Pietro † | Apostolic Nuncio to Portugal | Cardinal, Official of the Roman Curia - Other |
| 29 Sep | 59.6 | Died | Anton Gottfried Claessen † | Auxiliary Bishop of Köln {Cologne}, Germany |
| 30 Sep | 77.0 | Died | Giuseppe Alberghini † | Cardinal, Cardinal-Priest of S. Prisca |
| Born | Wincenty Kluczynski † | Szarkowsczyna | Archbishop Emeritus of Mohilev, Belarus |
| 1 Oct | 43.0 | Died | Michael Power † | Bishop of Toronto, Ontario, Canada |
| 3 Oct | 34.7 | Ordained Bishop | Alexander Smith † | Titular Bishop of Parium | Coadjutor Vicar Apostolic of Western District, Scotland, Great Britain |
| 4 Oct | 33.1 | Appointed | Camillo de' Marchesi Bisleti † | Bishop of Ripatransone, Italy | Bishop of Tarquinia e Civitaveccia, Italy |
| 65.5 | Appointed | Juan José Bonel y Orbe † | Cardinal, Archbishop of Toledo, Spain |
| 48.9 | Appointed | Joaquín Fernández Cortina † | Bishop of Sigüenza, Spain |
| 37.1 | Appointed | Innocenzo Ferrieri † | Titular Archbishop of Side | Cardinal, Prefect of the Congregation of Bishops and Regulars |
| 62.0 | Appointed | Paulus Augustus Foscolo † | Patriarch of Alexandria of Egypt {Alessandria di Egitto} (-Eliopoli di Egitto-Port-Said) |
| 36.6 | Appointed | Francesco Mazzuoli † | Bishop of San Severino, Italy |
| 70.1 | Appointed | Ramón Montero † | Archbishop of Burgos, Spain |
| 49.0 | Confirmed | Johann Georg Müller † | Bishop of Münster, Germany |
| 52.2 | Appointed | Giacomo Piccolomini † | Cardinal-Priest of S. Marco | Cardinal, Priest of the Roman Curia - Other |
| 65.5 | Appointed | Manuel Joaquín Tarancón y Morón † | Bishop of Córdoba, Spain | Cardinal, Archbishop of Sevilla {Seville}, Spain |
| 42.9 | Appointed | Rafael Valentín Valdivieso y Zañartu † | Archbishop of Santiago de Chile |
| 46.5 | Appointed | Luigi Vannicelli Casoni † | Cardinal-Priest of S. Prassede | Cardinal, Archbishop of Ferrara, Italy |
| 5 Oct | | Born | Igino Bandi † | Zeme | Bishop of Tortona, Italy |
| 6 Oct | 82.3 | Died | Joseph-Julien de Saint-Rome-Gualy † | Bishop of Carcassonne, France |
| 7 Oct | 78.6 | Died | Francisco Pablo Vásquez Bizcaíno (y Sánchez) † | Bishop of Tlaxcala, Tlaxcala, México |
| 8 Oct | | Born | Giacinto Gaggia † | Verola Nuova | Bishop of Brescia, Italy |
| 10 Oct | | Born | Giuseppe Barillari † | Serra San Bruno | Coadjutor Bishop of Cariati, Italy |
| 37.1 | Ordained Bishop | Innocenzo Ferrieri † | Titular Archbishop of Side | Cardinal, Prefect of the Congregation of Bishops and Regulars |
| 46.7 | Ordained Bishop | Louis Amadeus Rappe † | Bishop of Cleveland, Ohio, USA | Bishop Emeritus |
| 34.5 | Ordained Bishop | Giuseppe Valerga † | Patriarch of Gerusalemme {Jerusalem}, Palestine |
| 13 Oct | | Born | Benjamin Joseph Keiley † | Petersburg, VA | Bishop Emeritus of Savannah, Georgia, USA |
| 17 Oct | 22.6 | Ordained Priest | Guillaume-Marie-Romain Sourrieu † | Priest of Toulouse (-Narbonne), France | Cardinal, Archbishop of Rouen, France |
| 50.7 | Ordained Bishop | John Timon, C.M. † | Bishop of Buffalo, New York, USA |
| 18 Oct | 36.0 | Appointed | Agostino Giorgio Barshino (Barscinu) † | Coadjutor Bishop of Salmas {Shahpour} (Chaldean), Iran | Bishop |
| 70.8 | Ordained Bishop | Gaspar Cos Soberón † | Bishop of Calahorra y La Calzada, Spain |
| 23 Oct | | Born | Joseph-Emile Abbet, C.R.A. † | Vens | Abbot of Saint-Maurice, Switzerland |
| 24 Oct | 51.0 | Ordained Bishop | John Stephen (Jean Etienne) Bazin † | Bishop of Vincennes, Indiana, USA |
| 31 Oct | 28.3 | Ordained Priest | Robert Aston Coffin, C.SS.R. † | Priest | Bishop of Southwark, England, Great Britain |
| 1 Nov | | Born | Karl Augustin † | Olbersdorf | Auxiliary Bishop of Wrocław, Poland |
| Born | Raimondo Jaffei † | Bagnaia | Bishop of Forli, Italy |
| 2 Nov | 40.7 | Died | William Riddell † | Vicar Apostolic of Northern District, England, Great Britain |
| 6 Nov | 80.1 | Died | Francisco Garcia Cantarines † | Auxiliary Bishop of Antequera, Oaxaca, México |
| 16 Nov | 47.5 | Appointed | Henri-Marie-Gaston Boisnormand de Bonnechose † | Bishop of Carcassonne, France | Cardinal, Archbishop of Rouen, France |
| 18 Nov | 44.8 | Appointed | Paul-Armand-Ignace-Anaclet Cardon de Garsignies † | Bishop of Soissons (-Laon), France |
| 22 Nov | 88.1 | Died | Placido Maria Tadini, O.C.D. † | Cardinal, Archbishop of Genova, Italy |
| 23 Nov | 35.1 | Died | Jean-Benoît Truffet, C.S.Sp. † | Vicar Apostolic of Two Guineas {Des Deux Guinées}, Gabon |
| 28 Nov | 43.2 | Ordained Bishop | Louis-Désiré Maigret, SS.CC. † | Titular Bishop of Arad | Vicar Apostolic of Sandwich Islands, Hawaii, USA |
| 30 Nov | 38.1 | Ordained Bishop | Modeste Demers † | Bishop of Vancouver Island, USA |
| Dec | | Appointed | Andrea Canova, O.F.M. Cap. † | Titular Bishop of Croae | Vicar Apostolic of Sofia e Plovdiv, Bulgaria |
| 2 Dec | 75.1 | Died | Ján Krstitel Ladislav Pyrker (Pryker), O. Cist. † | Archbishop of Eger, Hungary |
| 6 Dec | | Born | Bernardino Caldajoli † | Castel del Piano | Bishop of Grosseto, Italy |
| 28.6 | Ordained Priest | Laurence Gillooly, C.M. † | Priest of Congregation of the Mission | Bishop of Elphin, Ireland |
| 7 Dec | 67.0 | Appointed | Francisco Javier Rodríguez Obregón † | Bishop of Badajoz, Spain |
| 8 Dec | | Born | Hermann Jürgens (Juergens), S.J. † | Münster, Germany | Archbishop of Bombay, India |
| 9 Dec | | Born | Johannes Leo von Mergel, O.S.B. † | Rohrbach | Bishop of Eichstätt, Germany |
| 14 Dec | 40.2 | Appointed | John Thomas Mullock, O.F.M. † | Coadjutor Bishop of Newfoundland, Canada | Bishop of Saint John’s, Newfoundland, Canada |
| 40.2 | Appointed | John Thomas Mullock, O.F.M. † | Titular Bishop of Thaumacus | Bishop of Saint John’s, Newfoundland, Canada |
| 17 Dec | 42.1 | Appointed | Mariano Benito Barrio Fernández † | Bishop of Cartagena (en España) | Cardinal, Archbishop of Valencia, Spain |
| 43.2 | Appointed | Domingo Canubio Alberto, O.P. † | Bishop of Segorbe, Spain |
| 59.5 | Appointed | Buenaventura Codina Augerolas, C.M. † | Bishop of Islas Canarias {Canary Islands}, Spain |
| 46.0 | Appointed | William Bernard Allen Collier, O.S.B. † | Bishop of Port-Louis, Mauritius | Bishop Emeritus |
| 42.9 | Appointed | José Domingo Costa Borrás † | Bishop of Lérida, Spain | Archbishop of Tarragona, Spain |
| 37.9 | Appointed | Raffaele d'Ambrosio, O.F.M. † | Archbishop of Durrës, Albania | Archbishop Emeritus |
| 42.9 | Appointed | José Escolano Fenoy † | Bishop of Jaén, Spain |
| 77.2 | Appointed | Manuel María Gómez de las Rivas † | Archbishop of Zaragoza, Spain |
| 62.6 | Appointed | Miguel José Irigoyen † | Bishop of Zamora, Spain | Bishop of Calahorra y La Calzada, Spain |
| 67.8 | Appointed | Antonio Lao Cuevas † | Bishop of Teruel, Spain | Bishop of Guadix, Spain |
| 52.7 | Confirmed | Josef von Lipp † | Bishop of Rottenburg, Germany |
| 50.1 | Appointed | Florencio Llorente Montón † | Bishop of Gerona, Spain |
| 64.5 | Appointed | Manuel López Santisteban † | Bishop of Avila, Spain | Bishop Emeritus |
| 51.1 | Appointed | Rafael Manso † | Bishop of Mallorca, Spain | Bishop of Zamora, Spain |
| 69.4 | Appointed | Anacleto Meoro Sánchez † | Bishop of Almería, Spain |
| 63.7 | Appointed | Manuel Anselmo Nafría † | Bishop of Coria, Spain |
| 79.8 | Appointed | Antonio Posada Rubín de Celis † | Patriarch of West Indies, Antilles |
| 68.9 | Appointed | Judas José Romo y Gamboa † | Cardinal, Archbishop of Sevilla {Seville}, Spain |
| 67.4 | Appointed | Juan Gilberto Ruiz Capucín y Feijó † | Bishop of Cuenca, Ecuador |
| 66.3 | Appointed | Gregorio Sánchez Rubio, O.S.H. † | Bishop of Osma, Spain | Bishop of Avila, Spain |
| 64.7 | Appointed | Pedro José Zarandia Endara † | Bishop of Orense, Spain | Bishop of Huesca, Spain |
| 18 Dec | 24.6 | Ordained Priest | Joseph-Alfred Foulon † | Priest | Cardinal, Archbishop of Lyon (-Vienne), France |
| 33.1 | Ordained Priest | Martin Griver y Cuni † | Priest of Perth, Australia | Bishop |
| 27.1 | Ordained Priest | François-Eugène Lions, M.E.P. † | Priest of La Société des Missions Etrangères | Vicar Apostolic of Kuiceu, China |
| 24.1 | Ordained Priest | Manuel Mercader y Arroyo † | Priest | Bishop of Menorca, Spain |
| 65.4 | Appointed | Santiago Rodríguez Gil, O.P. † | Bishop of Lugo, Spain |
| 25.2 | Ordained Priest | Pierre-Paul Stumpf † | Priest of Strasbourg, France | Bishop |
| 22 Dec | 49.2 | Installed | Johann Georg Müller † | Bishop of Münster, Germany |
| 23 Dec | | Born | Laurent-Marie-Etienne Monnier † | Poligny | Bishop of Troyes, France |
| 26 Dec | 22.9 | Ordained Priest | Vincenzo Manicardi † | Priest | Bishop of Reggio Emilia, Italy |
| 27 Dec | | Born | Donato Maria Dell'Olio † | Bisceglie | Cardinal, Archbishop of Benevento, Italy |
| 48.0 | Ordained Bishop | Aidan Devereaux † | Titular Bishop of Paneade | Vicar Apostolic of Cape of Good Hope, Eastern District {Capo de Buona Speranza, Distretto Orientale}, South Africa |
| Died | Fortunato Maria Ercolani, C.P. † | Bishop of Civita Castellana, Orte e Gallese, Italy |
| 40.3 | Ordained Bishop | John Thomas Mullock, O.F.M. † | Titular Bishop of Thaumacus | Bishop of Saint John’s, Newfoundland, Canada |
| 28 Dec | | Born | Pascual Carrascosa y Gabaldón † | Quintanar del Rey | Bishop of Orense, Spain |
| 29 Dec | | Born | Alexis-Xyste Bernard † | Beloeil | Bishop of Saint-Hyacinthe, Québec, Canada |
| 75.4 | Died | Félix Torres Amat † | Bishop of Astorga, Spain |
| 30 Dec | | Born | George Thomas Montgomery † | Saint Lawrence, KY | Coadjutor Archbishop of San Francisco, California, USA |