| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Appointed | Parsegh Petros IV Avkadian † | Bishop | Patriarch of Cilicia (Armenian), Lebanon |
| Ordained Bishop | Parsegh Petros IV Avkadian † | Bishop | Patriarch of Cilicia (Armenian), Lebanon |
| 54.6 | Ordained Bishop | Diego Antonio de Parada † | Bishop of La Paz, Bolivia | Archbishop of Lima, Peru |
| 17.7 | Professed | Joseph-Antoine (Maxime) Guisolan, O.F.M. Cap. † | Member of Order of Friars Minor Capuchin | Bishop of Lausanne, Switzerland |
| Appointed | Mikaël Petros III Kasparian † | Bishop of Alep (Armenian), Syria | Patriarch of Cilicia (Armenian), Lebanon |
| Ordained Bishop | Mikaël Petros III Kasparian † | Bishop of Alep (Armenian), Syria | Patriarch of Cilicia (Armenian), Lebanon |
| 20.0 | Professed | Augustin Botoš-Okić (Occhich), O.F.M. Obs. † | Member of Order of Observant Friars Minor | Vicar Apostolic of Bosnia (Ottoman), Croatia |
| 26.8 | Professed | François Pottier, M.E.P. † | Member of La Société des Missions Etrangères | Vicar Apostolic of Se-Ciuen (Setchoan, Szechwan, Sichuan), China |
| Born | Peter Waldron † | | Bishop of Killala, Ireland |
| Jan | | Born | Edmund Burke † | | Vicar Apostolic of Nova Scotia, Canada |
| 2 Jan | 76.0 | Died | Francesco Maria Miceli † | Bishop of Lipari, Italy |
| 5 Jan | 63.6 | Died | Andreas Jakob von Dietrichstein † | Archbishop of Salzburg, Austria |
| 9 Jan | | Born | Bernard-Claude Panet † | | Archbishop of Québec, Canada |
| 18 Jan | 72.0 | Selected | Giacomo Bonanno, C.R. † | Archbishop of Monreale, Italy |
| 19 Jan | | Born | Giovanni Francesco Guerrieri † | | Bishop Emeritus of Rimini, Italy |
| 20 Jan | 68.2 | Died | Severino Antonio Missini † | Bishop of Borgo San Donnino, Italy |
| 22 Jan | 49.0 | Appointed | Jean-Baptiste Maigrot † | Coadjutor Vicar Apostolic of Se-Ciuen (Setchoan, Szechwan, Sichuan), China | Priest |
| 49.0 | Appointed | Jean-Baptiste Maigrot † | Titular Bishop of Assuras | Priest |
| 26 Jan | 71.9 | Died | Gaetano Costa de Puerto, O.F.M. Ref. † | Bishop of Crotone (Cotrone), Italy |
| 29 Jan | 69.5 | Resigned | Carlo Alberto Guidobono Cavalchini † | Chamberlain (Camerlengo) of the College of Cardinals | Cardinal, Datary of the Apostolic Datary |
| 32.4 | Confirmed | Bartolomeu Manoel Mendes dos Reis † | Bishop of Macau, China | Bishop Emeritus of Mariana, Brazil |
| 49.3 | Confirmed | Antonio Nogueira † | Bishop of São Tomé e Príncipe |
| 52.0 | Died | Laurence Richardson, O.P. † | Bishop of Kilmore, Ireland |
| 55.7 | Confirmed | Józef Eustachy Szembek † | Bishop of Płock, Poland |
| 45.5 | Appointed | Pedro Jacinto Valente, O. do Cristo † | Bishop of Santiago de Cabo Verde |
| 3 Feb | 63.0 | Died | Protacio Cabezas † | Bishop of Cebu, Philippines |
| 6 Feb | 68.0 | Installed | Amand von Buseck, O.S.B. † | Bishop of Fulda, Germany |
| 8 Feb | 50.1 | Selected | Nicholas Madgett † | Bishop of Kerry (o Ardfert) e Aghadoe, Ireland |
| Selected | William O’Meara † | Bishop of Killaloe, Ireland |
| 9 Feb | | Born | Alessandro Tommasini † | | Archbishop of Reggio Calabria, Italy |
| 11 Feb | 50.1 | Ordained Bishop | Nicholas Madgett † | Bishop of Killaloe, Ireland | Bishop of Kerry (o Ardfert) e Aghadoe, Ireland |
| 16 Feb | 89.4 | Died | Tommaso Ruffo † | Cardinal, Archbishop Emeritus of Ferrara, Italy |
| 17 Feb | 46.4 | Died | Carlo Rosati † | Bishop of Alife, Italy |
| 22 Feb | 65.6 | Died | Antonio Maria Ruffo † | Cardinal, Cardinal-Priest of San Silvestro in Capite |
| 23 Feb | 50.1 | Confirmed | Nicholas Madgett † | Bishop of Kerry (o Ardfert) e Aghadoe, Ireland |
| Confirmed | William O’Meara † | Bishop of Killaloe, Ireland |
| 24 Feb | 66.7 | Installed | José Francisco Martínez de Tejada y Díez de Velasco, O.F.M. † | Bishop of Guadalajara, Jalisco, México |
| 30.9 | Ordained Bishop | Johann Hildebrand Roten † | Bishop of Sion {Sitten}, Switzerland |
| 4 Mar | 55.3 | Ordained Bishop | Carlos Antonio Riomol y Quiroga † | Bishop of Mondoñedo, Spain |
| 12 Mar | 44.8 | Appointed | Girolamo Colonna di Sciarra † | Cardinal-Deacon of San Lorenzo in Damaso | Cardinal, Cardinal-Deacon of Sant’Agata de’ Goti |
| 34.9 | Appointed | François d’Etienne de Prunières de Saint-Jean † | Bishop of Grasse, France |
| 39.7 | Appointed | Tommaso Giannelli † | Bishop of Termoli, Italy |
| 49.0 | Appointed | Bartolomeo Gradenigo † | Coadjutor Archbishop of Udine, Italy | Archbishop |
| Born | Benito Lué y Riega † | | Bishop of Buenos Aires, Argentina |
| 63.0 | Confirmed | Marcello Papiniano-Cusani † | Archbishop of Otranto, Italy | Archbishop Emeritus of Palermo, Italy |
| 56.2 | Appointed | Paul de Révay † | Auxiliary Bishop of Esztergom, Hungary |
| 56.2 | Appointed | Paul de Révay † | Titular Bishop of Dibon (Dibona) | Auxiliary Bishop of Esztergom, Hungary |
| 52.6 | Appointed | Diego Rojas y Contreras † | Bishop of Cartagena (en España) |
| 56.9 | Appointed | Innocenzo Sanseverino † | Bishop of Alife, Italy | Bishop Emeritus |
| Born | Gregório José Viegas, T.O.R. † | | Former Bishop-Elect of Olinda, Brazil |
| 13 Mar | 50.1 | Selected | José Antonio Flores de Rivera † | Bishop of Nicaragua |
| 72.0 | Died | Antonio Saverio Gentili † | Cardinal, Prefect of the Congregation of the Council |
| 17 Mar | 22.8 | Ordained Priest | Pál László Esterházy † | Priest | Bishop of Pécs, Hungary |
| 18 Mar | | Born | Domenico Antonio Cimaglia † | | Bishop of Molfetta, Italy |
| 39.8 | Ordained Bishop | Tommaso Giannelli † | Bishop of Termoli, Italy |
| 63.0 | Ordained Bishop | Marcello Papiniano-Cusani † | Archbishop of Otranto, Italy | Archbishop Emeritus of Palermo, Italy |
| 25 Mar | 41.3 | Selected | Andrew Campbell † | Bishop of Kilmore, Ireland |
| 52.6 | Selected | José Vidal de Moctezuma y Tobar, O. de M. † | Bishop of Chiapas (Ciudad Real de Chiapas), México |
| 30 Mar | 58.3 | Selected | Pedro Agustín Morell de Santa Cruz y Lora † | Bishop of Santiago de Cuba |
| 3 Apr | 41.3 | Confirmed | Andrew Campbell † | Bishop of Kilmore, Ireland |
| 4 Apr | | Born | [Claude Eustache François Marolles] † | | Bishop of [Aisne (Constitutional), France] |
| 5 Apr | 55.1 | Selected | Siegmund Christoph von Schrattenbach † | Archbishop of Salzburg, Austria |
| 7 Apr | 22.9 | Ordained Priest | Antun Belglava (Belgravia) † | Priest | Bishop of Trogir (Traù), Croatia |
| 8 Apr | 51.2 | Selected | Juan de La Fuente Yepes † | Bishop of Nueva Segovia, Philippines |
| 9 Apr | 41.0 | Confirmed | Petru Pavel Aaron, O.S.B.M. † | Bishop of Făgăraş (Romanian), Romania |
| 41.1 | Appointed | Girolamo Bajardi † | Bishop of Borgo San Donnino, Italy |
| 75.7 | Appointed | Pier Luigi Carafa (Jr.) † | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 51.2 | Appointed | Isidro Alfonso Cavanillas † | Archbishop (Personal Title), Auxiliary of Sevilla {Seville}, Spain | Bishop of Zamora, Spain |
| 51.2 | Appointed | Isidro Alfonso Cavanillas † | Titular Archbishop of Anazarbus | Bishop of Zamora, Spain |
| 83.0 | Appointed | Raniero d’Elci † | Cardinal-Bishop of Porto e Santa Rufina | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 20.5 | Professed | Eustach Federl, O.C.D. † | Member of Order of Discalced Carmelites | Vicar Apostolic of Malabar, India |
| 47.0 | Appointed | Alfonso Fernández Pantoja † | Bishop of León, Spain |
| 72.0 | Appointed | Joaquín Fernández de Portocarrero Mendoza † | Cardinal-Priest of Santa Maria in Trastevere | Cardinal, Cardinal-Bishop of Sabina |
| 61.8 | Appointed | Vincenzo Maria de Francisco e Galletti, O.P. † | Bishop of Lipari, Italy |
| 57.9 | Appointed | Federico Marcello Lante Montefeltro Della Rovere † | Cardinal-Priest of San Silvestro in Capite | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 40.0 | Confirmed | Antoni Kazimierz Ostrowski † | Bishop of Inflanty (Livonia)-Pilten, Poland | Archbishop of Gniezno, Poland |
| 59.1 | Appointed | Giuseppe Spinelli † | Cardinal-Bishop of Palestrina | Cardinal, Cardinal-Bishop of Ostia |
| 70.1 | Appointed | Fortunato Tamburini, O.S.B. † | Cardinal, Cardinal-Priest of San Callisto |
| 63.1 | Appointed | Silvio Valenti Gonzaga † | Cardinal-Bishop of Sabina | Cardinal, Secretary of State |
| 48.1 | Confirmed | Walenty Franciszek Wężyk † | Bishop of Chełm, Poland | Bishop of Przemyśl, Poland |
| 60.7 | Appointed | Jakob Johann Joseph Wolsky von Bärenstamm † | Titular Bishop of Pergamum | Prefect of Lausitz (Lusatia), Germany |
| 10 Apr | | Born | Giovanni Marchetti † | | Titular Archbishop of Ancyra |
| 12 Apr | 57.4 | Selected | José Moreno Curiel, O.SS.T. † | Archbishop of Santo Domingo, Dominican Republic |
| 13 Apr | 62.2 | Selected | José Javier de Arauz y Rojas † | Archbishop of Santafé en Nueva Granada, Colombia |
| 50.2 | Selected | Ferdinand Camacho y Rojas † | Bishop of Santa Marta, Colombia |
| 19 Apr | 73.5 | Died | Pedro Copóns Copóns † | Archbishop of Tarragona, Spain |
| 21 Apr | 22.8 | Ordained Deacon | František von Berchtold † | Deacon | Bishop of Banská Bystrica, Slovakia |
| 22.4 | Ordained Deacon | Kryspin Cieszkowski † | Deacon | Auxiliary Bishop of Lviv, Ukraine |
| 25.3 | Ordained Priest | Giuseppe Maria Corte † | Priest | Bishop of Mondovi, Italy |
| 41.9 | Ordained Priest | Alessandro Galletti † | Priest | Bishop of Volterra, Italy |
| 43.5 | Ordained Priest | Eugenio Benedetto Scaramuccia † | Priest | Bishop of San Severo, Italy |
| 22 Apr | 22.0 | Ordained Deacon | Ernest Johann Nepomuk von Herberstein (Herbstein) † | Deacon of Freising, Germany | Bishop of Linz, Austria |
| 56.3 | Selected | Ignacio Padilla Estrada (Guardiola), O.S.A. † | Archbishop (Personal Title) of Yucatán (Mérida), México | Bishop |
| 23 Apr | 41.1 | Ordained Bishop | Girolamo Bajardi † | Bishop of Borgo San Donnino, Italy |
| 61.8 | Ordained Bishop | Vincenzo Maria de Francisco e Galletti, O.P. † | Bishop of Lipari, Italy |
| 28 Apr | | Born | Felipe Montoya Díez † | | Bishop of Teruel, Spain |
| 29 Apr | 56.3 | Ordained Bishop | Paul de Révay † | Titular Bishop of Dibon (Dibona) | Auxiliary Bishop of Esztergom, Hungary |
| 8 May | | Born | Michele Belli † | | Titular Archbishop of Nazianzus |
| Born | László Kámánházy † | | Bishop of Vác, Hungary |
| 10 May | 62.4 | Selected | Domenico Zicari † | Bishop of Crotone (Cotrone), Italy | Archbishop of Reggio Calabria, Italy |
| 11 May | 75.7 | Died | Jean-Joseph Languet de Gergy † | Archbishop of Sens, France |
| 12 May | | Born | Ignacy Stanislaw Czyżewski † | | Bishop of Sejny o Sejna o Augustów, Poland |
| 20 May | | Born | William Coppinger † | | Bishop of Cloyne and Ross, Ireland |
| 35.0 | Ordained Bishop | François d’Etienne de Prunières de Saint-Jean † | Bishop of Grasse, France |
| 25 May | 61.8 | Died | Gaetano d’Arco † | Bishop of Nusco, Italy |
| 27 May | 22.8 | Ordained Priest | Romedius Marie Leopold von Sarentheim † | Priest of Brixen {Bressanone}, Italy | Auxiliary Bishop |
| 28 May | 62.4 | Confirmed | José Javier de Arauz y Rojas † | Archbishop of Santafé en Nueva Granada, Colombia |
| 68.3 | Appointed | Girolamo de Bardi † | Cardinal, Cardinal-Deacon of Santa Maria degli Angeli |
| 72.4 | Confirmed | Giacomo Bonanno, C.R. † | Archbishop of Monreale, Italy |
| 50.4 | Confirmed | Ferdinand Camacho y Rojas † | Bishop of Santa Marta, Colombia |
| 51.4 | Confirmed | Juan de La Fuente Yepes † | Bishop of Nueva Segovia, Philippines |
| 57.6 | Confirmed | José Moreno Curiel, O.SS.T. † | Archbishop of Santo Domingo, Dominican Republic |
| 58.4 | Confirmed | Pedro Agustín Morell de Santa Cruz y Lora † | Bishop of Santiago de Cuba |
| 52.8 | Confirmed | José Vidal de Moctezuma y Tobar, O. de M. † | Bishop of Chiapas (Ciudad Real de Chiapas), México |
| 56.4 | Confirmed | Ignacio Padilla Estrada (Guardiola), O.S.A. † | Archbishop (Personal Title) of Yucatán (Mérida), México | Bishop |
| 29 May | | Born | Jean-Claude Leblanc de Beaulieu † | | Archbishop Emeritus of Arles, France |
| 2 Jun | 40.1 | Ordained Bishop | Antoni Kazimierz Ostrowski † | Bishop of Inflanty (Livonia)-Pilten, Poland | Archbishop of Gniezno, Poland |
| 3 Jun | 39.7 | Ordained Priest | Tomás de Azpuru Ximénez † | Priest | Archbishop of Valencia, Spain |
| 41.5 | Ordained Bishop | Andrew Campbell † | Bishop of Kilmore, Ireland |
| 58.1 | Died | Johann Philipp Anton von Frankenstein † | Bishop of Bamberg, Germany |
| 6 Jun | 64.0 | Died | Joannes Antonius Stratman, O.C.D. † | Vicar Apostolic of Great Mogul (Mughals), India |
| 9 Jun | 64.4 | Died | Hagop Petros II Hovsepian † | Patriarch of Cilicia (Armenian), Lebanon |
| Elected | Mikaël Petros III Kasparian † | Patriarch of Cilicia (Armenian), Lebanon |
| 11 Jun | | Born | Jean de Longueville † | | Prefect Emeritus of Iles Saint-Pierre et Miquelon |
| 15 Jun | | Born | Joaquim Maria Mascarenhas Castello Branco † | | Bishop Emeritus of Angola e Congo |
| 16 Jun | 25.8 | Ordained Priest | John Butler, S.J. † | Priest of Society of Jesus |
| 23.4 | Ordained Priest | Onofrio Maria Ginnari † | Priest | Bishop of Montemarano, Italy |
| 22.0 | Ordained Deacon | Franz Philipp von Inzaghi † | Deacon of Salzburg, Austria | Bishop of Gorizia e Gradisca, Italy |
| 22.9 | Ordained Priest | Giuseppe Pasquale Rogani † | Priest | Bishop of Trevico, Italy |
| 24.5 | Ordained Priest | Giacinto Amedeo Vagnone † | Priest | Bishop Emeritus of Alba (Pompea), Italy |
| 17 Jun | 20.0 | Ordained Subdeacon | Beat (Marzell) Küttel von Gersau, O.S.B. † | Subdeacon of Order of Saint Benedict | Abbot of Maria Einsiedeln, Switzerland |
| 48.3 | Ordained Bishop | Walenty Franciszek Wężyk † | Bishop of Chełm, Poland | Bishop of Przemyśl, Poland |
| 19 Jun | | Born | François-Melchior-Charles-Bienvenu de Miollis † | | Bishop Emeritus of Digne, France |
| 20 Jun | | Born | Antonio Gómez Polanco, O.F.M. Obs. † | | Bishop of Santa Marta, Colombia |
| 23 Jun | | Born | Juan Antonio Zulaibar y Aldape, O.P. † | | Archbishop of Manila, Philippines |
| 24 Jun | 60.9 | Ordained Bishop | Jakob Johann Joseph Wolsky von Bärenstamm † | Titular Bishop of Pergamum | Prefect of Lausitz (Lusatia), Germany |
| 26 Jun | 72.7 | Died | Jan-Baptist de Castillion † | Bishop of Brugge {Bruges}, Belgium |
| 27 Jun | | Born | Pietro Bianco † | | Bishop of Alghero, Italy |
| 29 Jun | 23.0 | Ordained Priest | František von Berchtold † | Priest | Bishop of Banská Bystrica, Slovakia |
| 30 Jun | | Born | Gabriello Maria Gravina, O.S.B. † | | Prelate of Santa Lucia del Mela, Italy |