| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Died | John Butler † | Bishop-Elect of Limerick, Ireland |
| Born | José María Estévez † | | Bishop of Santa Marta, Colombia |
| Born | William Fraser (Frazer) † | Craskie in Glencannish, Great Britain | Bishop of Arichat, Nova Scotia, Canada |
| 25.0 | Ordained Priest | Patrick Lambert, O.F.M. † | Priest of Order of Friars Minor | Vicar Apostolic Emeritus of Newfoundland, Canada |
| Born | Basilius López † | Recoleta | Bishop of Paraguay |
| 17.9 | Professed | Polycarp Marciejewski, O.P. † | Member of Order of Friars Preachers | Auxiliary Bishop of Sejny o Sejna o Augustów, Poland |
| Born | Patrick MacNicholas † | | Bishop of Achonry, Ireland |
| 68.5 | Died | Joannes Josephus Priego, O.P. † | Bishop of Paraguay |
| 1 Jan | 24.1 | Ordained Priest | Gregor Tarkovic (Tárkovits) † | Priest of Mukachevo (Munkács) (Ruthenian), Ukraine | Bishop of Prešov (Prjašev) (Slovakian), Slovakia |
| 7 Jan | | Born | Judas José Romo y Gamboa † | Cañizar | Cardinal, Archbishop of Sevilla {Seville}, Spain |
| 9 Jan | 66.5 | Died | Andreas Ratti † | Titular Archbishop of Hadrianopolis in Haemimonto |
| 10 Jan | 43.4 | Ordained Bishop | Laurent-Michel Eon de Cély † | Bishop of Apt, France | Bishop Emeritus |
| 23.0 | Ordained Priest | Pietro Mola † | Priest | Bishop of Bergamo, Italy |
| 17 Jan | | Born | Lorenzo Parigini † | Col della Noce | Bishop of Urbania-Sant’Angelo in Vado, Italy |
| 78.0 | Died | Kazimierz Rokitnicki † | Auxiliary Bishop of Płock, Poland |
| 2 Feb | 47.9 | Ordained Bishop | Antoni Maciej Sierakowski † | Bishop of Inflanty (Livonia)-Pilten, Poland |
| 3 Feb | 51.7 | Died | Marco Giuseppe Cornaro (Corner) † | Bishop of Vicenza, Italy |
| 67.1 | Died | Jean-Louis de La Marthonie de Caussade † | Bishop of Meaux, France |
| 8 Feb | | Born | José de Moura Coutinho † | Basto | Bishop of Lamego, Portugal |
| 71.1 | Died | Andrés Pérez Bermúdez, O.F.M. † | Bishop of Jaca, Spain |
| 9 Feb | 61.7 | Died | Giuseppe Francesco Maria della Torre † | Bishop of Albenga, Italy |
| 18 Feb | 30.0 | Ordained Priest | Georg Karl Ignaz von Fechenbach zu Laudenbach † | Priest of Mainz, Germany | Bishop of Würzburg, Germany |
| 71.0 | Died | Adam Friedrich von Seinsheim † | Bishop of Würzburg, Germany |
| 20 Feb | 48.7 | Resigned | Johann Nepomuk Augustin von Hornstein zu Hohenstoffen † | Auxiliary Bishop of Konstanz {Constance}, Germany | Auxiliary Bishop Emeritus |
| 21 Feb | | Born | Giovanni Ferrini, O.F.M. Conv. † | Recanata | Bishop Emeritus of Bagnoregio (Bagnorea), Italy |
| 25 Feb | | Appointed | Denis Conway † | Bishop of Limerick, Ireland |
| 27 Feb | 58.7 | Ordained Priest | Giovanni Cornaro † | Priest | Cardinal, Cardinal-Deacon of San Cesareo in Palatio |
| 23.0 | Ordained Priest | Antón Mákay † | Priest | Bishop of Veszprém, Hungary |
| 28 Feb | | Ordained Bishop | Patrick Joseph Plunkett † | Bishop of Meath, Ireland |
| 1 Mar | 61.4 | Appointed | Giovanni Antonio Arras Minutili † | Bishop of Ampurias e Civita, Italy |
| 60.4 | Appointed | Josephus Antonius Barbosa Soares † | Bishop of Viseu, Portugal |
| 60.0 | Appointed | Zacharias Coccopalmieri † | Bishop of Umbriatico (Umbriaticum), Italy |
| 46.5 | Appointed | Jacinto Carlos da Silveira † | Bishop of São Luís do Maranhão, Brazil | Bishop Emeritus |
| 48.4 | Appointed | Vicente do Espirito Santo, O.A.D. † | Bishop of São Tomé e Príncipe | Prelate of Goiás, Brazil |
| 72.3 | Appointed | Joaquín Herrera Bárcena, O.S.B. † | Bishop of Islas Canarias {Canary Islands}, Spain |
| 49.4 | Appointed | Francisco José Marán † | Bishop of Concepción, Chile | Bishop of Santiago de Chile |
| 59.6 | Appointed | Giovanni Pignatelli † | Titular Archbishop of Caesarea in Palaestina | Bishop Emeritus of Anglona-Tursi, Italy |
| 57.2 | Appointed | Domingos da Encarnação Pontevel, O.P. † | Bishop of Mariana, Brazil |
| 40.4 | Appointed | Karl Godefried von Rosenthal † | Auxiliary Bishop of Olomouc, Czech Republic |
| 40.4 | Appointed | Karl Godefried von Rosenthal † | Titular Bishop of Capharnaum | Auxiliary Bishop of Olomouc, Czech Republic |
| 46.1 | Appointed | Joaquín Santiyán Valdivieso † | Archbishop of Tarragona, Spain |
| 53.2 | Appointed | Francisco de São Simão, O.F.M. † | Bishop of Santiago de Cabo Verde |
| 55.0 | Appointed | Felipe Antonio Solano Marín † | Bishop of Cuenca, Spain |
| 66.2 | Appointed | Fernando de Sousa e Silva † | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 59.2 | Appointed | Bernardo Velarde Velarde † | Archbishop of Zaragoza, Spain |
| 2 Mar | | Born | Diego Antonio Elizondo y Prado † | San Martin en la Concha | Bishop of Concepción, Chile |
| 49.8 | Died | Ignaz Franz Stanislaus von Spaur † | Bishop of Brixen {Bressanone}, Italy |
| 4 Mar | | Born | João da Purificação Marques Perdigão, O.S.A. † | Vianna do Minho | Bishop of Olinda, Brazil |
| 7 Mar | 60.0 | Ordained Bishop | Zacharias Coccopalmieri † | Bishop of Umbriatico (Umbriaticum), Italy |
| 11 Mar | 82.0 | Died | Louis-César-Constantin de Rohan-Guémené-Montbazon † | Cardinal, Bishop of Strasbourg, France |
| 44.5 | Succeeded | Louis-René-Edouard de Rohan-Guéménée † | Bishop of Strasbourg, France | Cardinal, Bishop Emeritus |
| 12 Mar | | Born | Giacinto Pippi † | Massa Marittima | Bishop of Chiusi e Pienza, Italy |
| 14 Mar | | Born | Vincenzo Annovazzi † | Civitavecchia | Bishop Emeritus of Anagni, Italy |
| 22.2 | Ordained Deacon | Tommaso Arezzo † | Deacon | Cardinal, Official of the Roman Curia - Other |
| 18 Mar | 48.5 | Selected | Franz Ludwig von Erthal † | Bishop of Würzburg, Germany |
| 19 Mar | 22.3 | Ordained Priest | Tommaso Arezzo † | Priest | Cardinal, Official of the Roman Curia - Other |
| 24.6 | Ordained Priest | Sigmund Christoph von Waldburg-Zeil-Trauchburg † | Priest of Salzburg, Austria | Bishop Emeritus of Chiemsee, Germany |
| 20 Mar | 24.2 | Ordained Priest | Jean-François Martin de Boisville † | Priest | Bishop of Dijon, France |
| Born | Simon William Gabriel Bruté de Rémur † | Rennes, France | Bishop of Vincennes, Indiana, USA |
| 22.9 | Ordained Priest | Guilelmus Zerbi † | Priest | Auxiliary Bishop of Sabina (-Farfa), Italy |
| 22 Mar | | Born | Nicola-Maria Laudisio, C.SS.R. † | Sarno | Bishop of Policastro, Italy |
| 40.5 | Ordained Bishop | Karl Godefried von Rosenthal † | Titular Bishop of Capharnaum | Auxiliary Bishop of Olomouc, Czech Republic |
| 63.3 | Died | Franz Xaver Twrdy † | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| 23 Mar | 71.0 | Died | Antonio Gómez de la Torre y Jaraveitia † | Bishop of Jaén, Spain |
| Born | Ippolito Niccolai † | Valenzatico | Bishop of Montepulciano, Italy |
| 24 Mar | 40.4 | Died | Girolamo Enrico Beltramini-Miazzi † | Bishop of Feltre, Italy |
| 25 Mar | 42.2 | Ordained Bishop | Baltazar Jaime Martínez de Compañón † | Bishop of Trujillo, Peru | Archbishop of Santafé en Nueva Granada, Colombia |
| 2 Apr | | Born | Francisco de La Puente, O.P. † | Saldaña, Spain | Bishop of Segovia, Spain |
| 3 Apr | 38.7 | Ordained Priest | Wilhelm Joseph Leopold Willibald von Baden † | Priest of Konstanz {Constance}, Germany | Auxiliary Bishop |
| 27.7 | Ordained Priest | Agostino Colaianni † | Priest | Bishop of Sora, Italy |
| 22.7 | Ordained Deacon | Nicolas-Alexis Ondernard † | Deacon | Bishop of Namur {Namen}, Belgium |
| 5 Apr | | Born | Bruno Maria Tedeschi † | Serra San Bruno | Bishop of Rossano, Italy |
| 6 Apr | 78.9 | Died | Niccolò Borgia † | Bishop of Aversa, Italy |
| 7 Apr | 66.5 | Died | Giuseppe Maria de Leone † | Bishop of Penne e Atri, Italy |
| 11 Apr | 41.1 | Ordained Priest | Stefano Giustiniani † | Priest | Bishop of Albenga, Italy |
| 12 Apr | 48.6 | Selected | Franz Ludwig von Erthal † | Bishop of Bamberg, Germany | Bishop of Würzburg, Germany |
| 16 Apr | | Born | Patrick Kelly † | Kilkenny, Ireland | Bishop of Waterford and Lismore, Ireland |
| 17 Apr | | Born | Anzelm Wojciech Brodziszewski † | Murowana Goślina | Auxiliary Bishop of Gniezno e Poznań, Poland |
| 18 Apr | 61.5 | Ordained Bishop | Giovanni Antonio Arras Minutili † | Bishop of Ampurias e Civita, Italy |
| 57.3 | Ordained Bishop | Domingos da Encarnação Pontevel, O.P. † | Bishop of Mariana, Brazil |
| 53.9 | Ordained Bishop | Juan Antonio de Jesús Sacedón Sánchez, O.F.M. † | Bishop of Linares o Nueva León, Nuevo León, México |
| 53.3 | Ordained Bishop | Francisco de São Simão, O.F.M. † | Bishop of Santiago de Cabo Verde |
| 23 Apr | 81.0 | Died | Diego Antonio de Parada † | Archbishop of Lima, Peru |
| 25 Apr | 72.5 | Ordained Bishop | Joaquín Herrera Bárcena, O.S.B. † | Bishop of Islas Canarias {Canary Islands}, Spain |
| 22.9 | Ordained Deacon | Antonio Leonardis da Lucinico † | Deacon | Bishop of Trieste e Capodistria (Koper), Italy |
| 2 May | 60.6 | Ordained Bishop | Josephus Antonius Barbosa Soares † | Bishop of Viseu, Portugal |
| 44.3 | Ordained Bishop | Manuel Obellar, O.P. † | Titular Bishop of Ruspae | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viet Nam |
| 9 May | 52.4 | Died | John MacDonald † | Vicar Apostolic of Highland District, Scotland, Great Britain |
| 13 May | | Died | Leon Ludwik Szeptycki (Czeptytski) † | Archbishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine |
| 21 May | 58.8 | Died | Johann Theodor von Franken-Siersdorf † | Vicar Apostolic of Upper and Lower Saxony (Hanover), Germany |
| 23 May | 56.0 | Installed | Antonio Caballero y Góngora † | Archbishop of Santafé en Nueva Granada, Colombia | Bishop of Córdoba, Spain |
| 26 May | | Born | Giovanni de’ Conti Sabbioni † | Fermo | Archbishop of Spoleto, Italy |
| 60.7 | Selected | Joseph Philipp Franz von Spaur † | Bishop of Brixen {Bressanone}, Italy |
| 29 May | 25.4 | Ordained Priest | Columbano Giovanni Battista Carlo Gaspare Chiaverotti, O.S.B. † | Priest of Order of Saint Benedict | Archbishop of Torino {Turin}, Italy |
| 23.0 | Ordained Priest | Antonio Leonardis da Lucinico † | Priest | Bishop of Trieste e Capodistria (Koper), Italy |
| 22.9 | Ordained Priest | Joseph Chrysostomus Pauer † | Priest of Clerics Regular of St. Paul | Bishop of Sankt Pölten, Austria |
| 30 May | 54.8 | Ordained Bishop | Cayetano Adsor Paredes † | Titular Archbishop of Selymbria | Patriarch of West Indies, Spain |
| 66.5 | Ordained Bishop | Fernando de Sousa e Silva † | Cardinal, Patriarch of Lisboa {Lisbon}, Portugal |
| 3 Jun | | Born | Johann Stanislaus Kutowski † | Wentfin | Auxiliary Bishop of Chelmno (Culma, Kulm), Poland |
| 12 Jun | | Born | Gaetano Balletti † | Ferrara | Bishop of Cervia, Italy |
| 15 Jun | | Born | Giovan Domenico Stefanelli, O.P. † | Vico Pancellorum | Archbishop Emeritus of Lucca, Italy |
| 19 Jun | | Born | Joseph Karl von Schuberth † | Neisse | Auxiliary Bishop of Wrocław (Breslau), Poland |
| 20 Jun | | Ordained Bishop | Denis Conway † | Bishop of Limerick, Ireland |
| 46.8 | Ordained Bishop | Jacinto Carlos da Silveira † | Bishop of São Luís do Maranhão, Brazil | Bishop Emeritus |
| 26 Jun | 66.6 | Died | Juan Manuel Argüelles † | Bishop of Palencia, Spain |
| 29 Jun | 24.4 | Ordained Deacon | Kajetan Augustyn Warteresiewicz † | Deacon | Archbishop of Lviv (Armenian), Ukraine |
| 30 Jun | 76.3 | Died | José Francisco Losada Quiroga † | Bishop of Mondoñedo, Spain |