| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Angelicus Bedenik, O.F.M. Cap. † | Koprivnica | Vicar Apostolic of Agra, India |
| 22.8 | Ordained Priest | Juan José Bonel y Orbe † | Priest | Cardinal, Archbishop of Toledo, Spain |
| 54.0 | Died | Alexandre-Henri de Chauvigny de Blot † | Bishop of Lombez, France |
| Born | Patrick Fallon † | Fahy | Bishop of Kilmacduagh, Ireland |
| 35.0 | Appointed | Anton El-Khazen (Gazeno) † | Bishop of Baalbek (Maronite), Lebanon |
| Born | Estefan El-Khazen (Gazeno) † | Alep | Archbishop of Damas (Maronite), Syria |
| 58.6 | Died | Louis-François-Alexandre de Jarente de Senas d’Orgeval † | Bishop Emeritus of Orléans, France |
| Born | Teodosio Kujamgi † | Damasco | Bishop of Saïda (Melkite Greek), Lebanon |
| 23.4 | Ordained Priest | Juan Francisco del Rosario Manfredo y Ballestas † | Priest | Bishop of Panamá |
| Born | Francesco Xavier Maresca, O.F.M. † | Napoli, Italy | Coadjutor Bishop of Nanking [Nanjing], China |
| Jan | 62.5 | Resigned | René des Monstiers de Mérinville † | Bishop of Chambéry, France | Bishop Emeritus |
| 67.2 | Died | Raimondo A. Vecchietti † | Bishop of Colle di Val d’Elsa, Italy |
| 2 Jan | 22.1 | Ordained Deacon | Josip Kuković † | Deacon | Bishop of Bosna (Djakovo) et Srijem, Croatia |
| Born | Salvatore Valentini † | Roma | Bishop of Amelia, Italy |
| 8 Jan | 58.6 | Died | Salvatore Spinelli, O.S.B. † | Archbishop of Salerno, Italy |
| 10 Jan | | Born | Napoleon Joseph Perché † | Angers, France | Archbishop of New Orleans, Louisiana, USA |
| 13 Jan | | Born | José Domingo Costa y Borrás † | Vinaroz | Archbishop of Tarragona, Spain |
| 23 Jan | | Born | José Affonso de Moraes Torres, C.M. † | Rio de Janeiro | Bishop Emeritus of Belém do Pará, Brazil |
| 25 Jan | 80.1 | Died | Tadeusz Teodozy Rostocki, O.S.B.M. † | Archbishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine |
| 27 Jan | 37.1 | Ordained Bishop | Francisco de São Damazo Abreu Vieira, O.F.M. † | Bishop of Malacca, Singapore | Archbishop of São Salvador da Bahia, Brazil |
| 28 Jan | 73.4 | Died | José Joaquim Justiniano Mascarenhas Castello Branco † | Bishop of São Sebastião do Rio de Janeiro, Brazil |
| 29 Jan | | Born | Joseph-François-Clet Peschoud † | Saint-Claude | Bishop of Cahors, France |
| 30 Jan | 58.8 | Selected | Louis-Mathias-Joseph de Barral † | Archbishop of Tours, France | Archbishop Emeritus |
| 53.5 | Selected | Pierre-Vincent Dombideau de Crouseilhes † | Bishop of Quimper, France |
| 62.2 | Selected | Etienne-Célestin Enoch † | Bishop of Rennes, France | Bishop Emeritus |
| 54.8 | Selected | Jean-Paul Faudoas † | Bishop of Meaux, France | Bishop Emeritus |
| 52.8 | Selected | Etienne-Parfait-Martin Maurel de Mons † | Bishop of Mende, France | Archbishop of Avignon, France |
| Born | Pietro Rota † | Coreggio | Bishop Emeritus of Mantova, Italy |
| 60.7 | Selected | Irénée-Yves Desolle (Dessole) † | Bishop of Chambéry, France | Archbishop Emeritus of Chambéry, France |
| Feb | 64.4 | Selected | Fortunado Pinto † | Archbishop of Salerno, Italy | Archbishop of Salerno (-Acerno), Italy |
| 1 Feb | 58.8 | Confirmed | Louis-Mathias-Joseph de Barral † | Archbishop of Tours, France | Archbishop Emeritus |
| 48.4 | Installed | Etienne-Hubert de Cambacérès † | Cardinal-Priest of Santo Stefano al Monte Celio | Cardinal, Archbishop of Rouen, France |
| 51.4 | Confirmed | Giovanni Battista Canaveri, C.O. † | Bishop of Vercelli, Italy | Bishop of Biella, Italy |
| 61.0 | Appointed | Karl Theodor von Dalberg † | Bishop of Regensburg, Germany | Bishop of Worms, Germany |
| 45.8 | Confirmed | Dominique-Georges-Frédéric Dufour de Pradt † | Bishop of Poitiers, France | Archbishop Emeritus of Mechelen, Belgium |
| 47.3 | Appointed | Teresio Maria Carlo Vittorio Ferrero della Marmora † | Bishop of Saluzzo, Italy | Cardinal, Bishop Emeritus |
| 47.3 | Appointed | Teresio Maria Carlo Vittorio Ferrero della Marmora † | Bishop of Pinerolo, Italy | Cardinal, Bishop Emeritus of Saluzzo, Italy |
| 51.1 | Appointed | Giuseppe Maria Pietro Grimaldi † | Bishop of Ivrea, Italy | Archbishop of Vercelli, Italy |
| 60.3 | Confirmed | Jean-François de Mandolx † | Bishop of Amiens, France |
| 69.9 | Confirmed | Gabriel-Laurent Paillou(x) † | Bishop of La Rochelle, France |
| 66.0 | Confirmed | Jean-Chrysostome de Villaret † | Bishop of Alessandria (della Paglia), Italy | Bishop Emeritus of Casale Monferrato, Italy |
| 54.0 | Confirmed | Giovanni Battista Pio Vitale † | Bishop of Mondovi, Italy |
| 2 Feb | 45.8 | Ordained Bishop | Dominique-Georges-Frédéric Dufour de Pradt † | Bishop of Poitiers, France | Archbishop Emeritus of Mechelen, Belgium |
| 73.0 | Died | Alessandro Maria Odoardi † | Bishop of Perugia, Italy |
| 69.9 | Ordained Bishop | Gabriel-Laurent Paillou(x) † | Bishop of La Rochelle, France |
| Ordained Bishop | Patrick Ryan † | Titular Bishop of Germanicia | Bishop of Ferns, Ireland |
| 4 Feb | | Born | José Escolano y Fenoi † | Granada | Bishop of Jaén, Spain |
| 11 Feb | | Born | Gaetano Carletti † | Ferrara | Bishop of Rieti, Italy |
| 12 Feb | | Born | Valentino Baranowski † | Słowków | Bishop of Lublin, Poland |
| 13 Feb | | Born | Giuseppe Novella, O.F.M. † | Carpasio, Italy | Coadjutor Vicar Apostolic Emeritus of Houkouang, China |
| 16 Feb | | Born | Heinrich von Hofstätter † | Aindling | Bishop of Passau, Germany |
| 17 Feb | 24.0 | Ordained Priest | Giovanni Maria Visconte Proto, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Cefalù, Italy |
| 20 Feb | 71.2 | Died | Domenico Mancinforte † | Bishop of Faenza, Italy |
| 24 Feb | 84.3 | Died | Jean-Baptiste du Plessis d’Argentré † | Bishop of Sées, France |
| 26 Feb | | Born | José Luis Montagut y Rubio † | Albaida | Bishop of Segorbe, Spain |
| 7 Mar | 24.6 | Ordained Priest | Jakob Joseph Wandt † | Priest of Hildesheim, Germany | Bishop |
| 8 Mar | 84.6 | Died | Juan Domingo González de la Reguera † | Archbishop of Lima, Peru |
| 9 Mar | 29.1 | Ordained Priest | Pablo Jesús Corcuera y Caserta † | Priest | Bishop of Vic, Spain |
| 11 Mar | 65.8 | Died | Edmund Maria Josef Artz von und zu Vasegg † | Auxiliary Bishop of Wien {Vienna}, Austria |
| 14 Mar | | Born | Pierre-Louis Coeur † | Tarare | Bishop of Troyes, France |
| 17 Mar | | Born | Patrick Bonaventure Geoghegan, O.F.M. † | Dublin, Ireland | Bishop of Goulburn, Australia |
| Born | Joseph Szabó † | Mezőkomárom | Auxiliary Bishop of Esztergom, Hungary |
| 18 Mar | | Born | Giovanni Cirino † | Nicosia | Auxiliary Bishop of Palermo, Italy |
| Born | Louis-Antoine-Augustin Pavy † | Roanne, France | Bishop of Alger, Algeria |
| 22 Mar | 61.4 | Died | Michele Argelati † | Bishop of Terracina, Priverno e Sezze, Italy |
| 53.7 | Confirmed | Pierre-Vincent Dombideau de Crouseilhes † | Bishop of Quimper, France |
| 62.3 | Confirmed | Etienne-Célestin Enoch † | Bishop of Rennes, France | Bishop Emeritus |
| 55.0 | Confirmed | Jean-Paul Faudoas † | Bishop of Meaux, France | Bishop Emeritus |
| 52.9 | Confirmed | Etienne-Parfait-Martin Maurel de Mons † | Bishop of Mende, France | Archbishop of Avignon, France |
| 60.8 | Confirmed | Irénée-Yves Desolle (Dessole) † | Bishop of Chambéry, France | Archbishop Emeritus of Chambéry, France |
| 29 Mar | | Born | Diego Mariano Alguacil y Rodríguez † | Córdoba | Bishop of Cartagena (en España) |
| 57.4 | Died | Pietro Luigi Rusconi † | Auxiliary Bishop of Cesena, Italy |
| Born | Georg Anton von Stahl † | Stadtprozelten | Bishop of Würzburg, Germany |
| 4 Apr | | Born | Etienne-Raymond Albrand, M.E.P. † | Saint-Crépin, France | Vicar Apostolic of Kuiceu, China |
| 7 Apr | | Born | William Keane † | Castlemartyr | Bishop of Cloyne, Ireland |
| 12 Apr | | Born | Emmanuel-Jean-François Verrolles, M.E.P. † | Vendredi-Saint, France | Vicar Apostolic of Manchuria {Manciuria}, China |
| 17 Apr | | Born | Jean-Baptiste-Amédée Georges-Massonnais † | Saint-Denis-de-Gastines | Bishop of Périgueux (-Sarlat), France |
| 62.5 | Died | Mercurio Maria Teresi † | Archbishop of Monreale, Italy |
| 20 Apr | | Born | Henri Louis Charles Maret † | Méyrueis, France | Titular Archbishop of Naupactus |
| 21 Apr | 53.8 | Ordained Bishop | Pierre-Vincent Dombideau de Crouseilhes † | Bishop of Quimper, France |
| 62.4 | Ordained Bishop | Etienne-Célestin Enoch † | Bishop of Rennes, France | Bishop Emeritus |
| 55.1 | Ordained Bishop | Jean-Paul Faudoas † | Bishop of Meaux, France | Bishop Emeritus |
| 53.0 | Ordained Bishop | Etienne-Parfait-Martin Maurel de Mons † | Bishop of Mende, France | Archbishop of Avignon, France |
| 65.8 | Died | Anton Ferdinand von Rothkirch und Panthen † | Auxiliary Bishop of Wrocław (Breslau), Poland |
| 24 Apr | | Born | Pierre-Marc Le Breton † | Pléven | Bishop of Le Puy-en-Velay, France |
| Born | Gregoria María López y Zaragoza † | Villacañas | Bishop of Plasencia, Spain |
| 29 Apr | 78.0 | Died | Juan Llano Ponte † | Bishop of Oviedo, Spain |
| 6 May | | Born | Luigi Vetta † | Acquaviva Collecroce | Bishop of Nardò, Italy |
| 9 May | 64.9 | Resigned | Pedro José Chávez de la Rosa † | Bishop of Arequipa, Peru | Bishop Emeritus |
| 56.1 | Appointed | Luis Ignatius Peñalver y Cárdenas † | Titular Archbishop of Tricca | Archbishop Emeritus of Guatemala |
| 56.1 | Resigned | Luis Ignatius Peñalver y Cárdenas † | Archbishop of Guatemala | Archbishop Emeritus |
| 12 May | 39.6 | Ordained Bishop | Joaquim de Meneses e Ataide, O.S.A. † | Bishop of São Tomé of Meliapore, India | Bishop of Elvas, Portugal |
| 14 May | | Born | Giuseppe Caiazzo, O.S.A. † | Napoli | Archbishop of Otranto, Italy |
| 19 May | 38.7 | Selected | Maurice-Jean-Madeleine de Broglie † | Bishop of Acqui, Italy | Bishop of Gent {Ghent, Gand}, Belgium |
| 23 May | | Died | Mikolaj Skorodynski † | Bishop of Lviv (Ukrainian), Ukraine |
| Born | John Marcellus Peter Augustine Verot, P.S.S. † | Le Puy, France | Bishop of Saint Augustine, Florida, USA |
| 24 May | 58.3 | Appointed | Michele Di Pietro † | Prefect of the Congregation for Propagation of the Faith | Cardinal, Major Penitentiary of the Apostolic Penitentiary |
| 31 May | 78.7 | Died | Matthaeus Franciscus Kertiza † | Bishop of Bosnia, Croatia |
| Jun | 53.2 | Selected | Bartolomeo Cesare † | Bishop of Potenza, Italy | Bishop of Potenza e Marsico Nuovo, Italy |
| 64.4 | Selected | Vincenzo Nicola Pasquale Dentice, O.S.B. † | Archbishop of Cosenza, Italy |
| 55.4 | Selected | Baldassare Mormile, C.R. † | Archbishop of Bari (-Canosa), Italy | Archbishop of Capua, Italy |
| 56.1 | Selected | Francesco Antonio Nanni, C.M. † | Bishop of Teramo, Italy | Bishop Emeritus |
| 38.1 | Selected | Camillo Giovanni Rossi † | Bishop of Marsi, Italy | Bishop Emeritus of San Severo, Italy |
| 60.2 | Selected | Lorenzo Villani † | Bishop of Monopoli, Italy |
| 2 Jun | 54.1 | Ordained Bishop | Marcos Cabello y López, O.S.A. † | Bishop of Guadix, Spain |
| 4 Jun | 22.5 | Ordained Priest | Josip Kuković † | Priest | Bishop of Bosna (Djakovo) et Srijem, Croatia |
| 5 Jun | 22.6 | Ordained Priest | Francesco Gentilini † | Priest | Bishop Emeritus of Rimini, Italy |
| 8 Jun | 22.9 | Ordained Priest | Luigi Paolo Pochettini di Serravalle † | Priest | Bishop of Ivrea, Italy |
| 22.1 | Ordained Deacon | Gaetano Tigani † | Deacon | Bishop of Anglona-Tursi, Italy |
| 12 Jun | | Born | Antonio Mussabini † | Izmir | Archbishop of Izmir (Smirne), Turkey |
| 15 Jun | | Born | John Martin Henni † | Misanenga, Switzerland | Archbishop of Milwaukee, Wisconsin, USA |
| 16 Jun | 23.9 | Ordained Deacon | Vincenzo Massi † | Deacon | Bishop Emeritus of Gubbio, Italy |
| 17 Jun | 65.5 | Died | Francesco Maria Cioja † | Bishop of Todi, Italy |
| 18 Jun | 69.9 | Died | Kajetan Maria (Ignaz Judas Thaddäus) Reisach, C.R. † | Titular Bishop of Dibon (Dibona) |
| 23 Jun | 23.9 | Ordained Priest | Vincenzo Massi † | Priest | Bishop Emeritus of Gubbio, Italy |
| Born | Federico Maria Zinelli † | Venezia | Bishop of Treviso, Italy |
| 24 Jun | 73.7 | Resigned | Carlo Luigi Buronzo del Signore † | Archbishop of Torino {Turin}, Italy | Archbishop Emeritus |
| 25 Jun | 71.5 | Died | Mikolaj Duchnowski † | Bishop of Suprasl (Ukrainian), Belarus |
| 26 Jun | 62.5 | Appointed | Giovanni Francesco d’Alessandria † | Bishop of Catanzaro, Italy |
| 57.2 | Confirmed | Custodio de Santa Ana d’Almeida, O.A.D. † | Bishop of São Tomé e Príncipe |
| 38.8 | Confirmed | Maurice-Jean-Madeleine de Broglie † | Bishop of Acqui, Italy | Bishop of Gent {Ghent, Gand}, Belgium |
| 63.9 | Appointed | Vincenzo Calà † | Archbishop of Sorrento, Italy |
| 53.3 | Confirmed | Bartolomeo Cesare † | Bishop of Potenza, Italy | Bishop of Potenza e Marsico Nuovo, Italy |
| 58.3 | Appointed | Giacinto della Torre, O.S.A. † | Archbishop of Torino {Turin}, Italy |
| 42.2 | Appointed | Benito María de Moxó y Francolí, O.S.B. † | Archbishop of La Plata o Charcas, Bolivia |
| 64.5 | Confirmed | Vincenzo Nicola Pasquale Dentice, O.S.B. † | Archbishop of Cosenza, Italy |
| 68.4 | Appointed | Nicola Francesco Franchi † | Bishop of Penne e Atri, Italy |
| 56.6 | Appointed | Jan Klemens Gołaszewski † | Bishop of Wigry, Poland | Bishop of Sejny o Sejna o Augustów, Poland |
| 66.2 | Confirmed | Wojciech Górski † | Bishop of Kielce, Poland |
| 51.2 | Appointed | Jean Lambert de Hannotte † | Titular Bishop of Teos |
| 58.9 | Appointed | Blas Jacobo Beltrán † | Bishop of Ibiza, Spain | Bishop of Coria, Spain |
| 48.1 | Appointed | Vasco José a Domina Nostra de Bona Morte Lobo, C.R.S.A. † | Prelate of Mozambico, Mozambique | Prelate Emeritus |
| 48.1 | Appointed | Vasco José a Domina Nostra de Bona Morte Lobo, C.R.S.A. † | Titular Bishop of Olba | Prelate Emeritus of Mozambico, Mozambique |
| 41.0 | Appointed | Antoni Luboradzki † | Auxiliary Bishop of Płock, Poland |
| 41.0 | Appointed | Antoni Luboradzki † | Titular Bishop of Tanis | Auxiliary Bishop of Płock, Poland |
| 58.1 | Appointed | Gioacchino Maria Mancusi (Mancuso) † | Archbishop of Conza, Italy |
| 59.8 | Appointed | Marcos de Moriana y Zafrilla † | Bishop of Michoacán, México |
| 55.5 | Confirmed | Baldassare Mormile, C.R. † | Archbishop of Bari (-Canosa), Italy | Archbishop of Capua, Italy |
| 53.2 | Appointed | Vincenzo Maria Mossi de Morano † | Titular Archbishop of Side | Bishop Emeritus of Alessandria (della Paglia), Italy |
| 56.2 | Confirmed | Francesco Antonio Nanni, C.M. † | Bishop of Teramo, Italy | Bishop Emeritus |
| 64.8 | Confirmed | Fortunado Pinto † | Archbishop of Salerno, Italy | Archbishop of Salerno (-Acerno), Italy |
| 62.7 | Appointed | Vincenzo Rogadei, O.S.B. † | Bishop of Caserta, Italy |
| 38.2 | Confirmed | Camillo Giovanni Rossi † | Bishop of Marsi, Italy | Bishop Emeritus of San Severo, Italy |
| 43.6 | Appointed | Hipólito Antonio Sánchez Rangel de Fayas, O.F.M. † | Bishop of Maynas, Peru | Bishop of Lugo, Spain |
| 51.1 | Appointed | Michele Sanseverino † | Bishop of Gaeta, Italy |
| 49.7 | Appointed | Pedro Antonio Trevilla † | Bishop of Córdoba, Spain |
| 60.3 | Confirmed | Lorenzo Villani † | Bishop of Monopoli, Italy |
| 64.1 | Appointed | Stanisław Żarnowiecki † | Auxiliary Bishop of Poznań, Poland |
| 64.1 | Appointed | Stanisław Żarnowiecki † | Titular Bishop of Leuce | Auxiliary Bishop of Poznań, Poland |
| 30 Jun | 62.5 | Ordained Bishop | Giovanni Francesco d’Alessandria † | Bishop of Catanzaro, Italy |
| 64.0 | Ordained Bishop | Vincenzo Calà † | Archbishop of Sorrento, Italy |
| 53.3 | Ordained Bishop | Bartolomeo Cesare † | Bishop of Potenza, Italy | Bishop of Potenza e Marsico Nuovo, Italy |
| 64.5 | Ordained Bishop | Vincenzo Nicola Pasquale Dentice, O.S.B. † | Archbishop of Cosenza, Italy |
| Born | Louis-Marie-Olivier Epivent † | Pordic | Bishop of Aire et Dax, France |
| 58.1 | Ordained Bishop | Gioacchino Maria Mancusi (Mancuso) † | Archbishop of Conza, Italy |
| 55.5 | Ordained Bishop | Baldassare Mormile, C.R. † | Archbishop of Bari (-Canosa), Italy | Archbishop of Capua, Italy |
| 56.2 | Ordained Bishop | Francesco Antonio Nanni, C.M. † | Bishop of Teramo, Italy | Bishop Emeritus |
| 62.7 | Ordained Bishop | Vincenzo Rogadei, O.S.B. † | Bishop of Caserta, Italy |
| 38.2 | Ordained Bishop | Camillo Giovanni Rossi † | Bishop of Marsi, Italy | Bishop Emeritus of San Severo, Italy |
| 51.2 | Ordained Bishop | Michele Sanseverino † | Bishop of Gaeta, Italy |
| 60.3 | Ordained Bishop | Lorenzo Villani † | Bishop of Monopoli, Italy |