| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Jean-René Asseline † | Paris | Bishop of Boulogne (-Sur-Mer), France |
| Born | Philippe-François d’Albignac de Castelnau † | Mende | Bishop of Angoulême, France |
| 15.8 | Professed | Ferdinando de Vicariis, O.S.B. † | Member of Order of Saint Benedict | Bishop of Melfi e Rapolla, Italy |
| 60.0 | Died | Miguel Bernardino de la Fuenta y Rojas † | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| 52.0 | Died | José Ignacio Mijares Solórzano y Tobar † | Bishop of Santa Marta, Colombia |
| Ordained Priest | Philip Phillips † | Priest | Archbishop of Tuam, Ireland |
| 2 Jan | 54.4 | Died | Rizzardo Isolani † | Bishop of Senigallia, Italy |
| 4 Jan | 28.3 | Ordained Priest | Vicente da Gamal Leao † | Priest | Coadjutor Bishop Emeritus of São Sebastião do Rio de Janeiro, Brazil |
| 5 Jan | 89.5 | Died | Giuseppe de Carolis † | Bishop of Aquino e Pontecorvo, Italy |
| 6 Jan | 24.8 | Ordained Priest | Joaquim Xavier Botelho de Lima † | Priest | Archbishop of Évora, Portugal |
| 63.0 | Died | Antonio López Portillo de Guadalupe, O.F.M. † | Bishop of Comayagua, Honduras |
| 69.3 | Died | Abdallah Qaraali, O.L.M. † | Bishop of Beirut {Bairut} (Maronite), Lebanon |
| 9 Jan | | Born | Filippo Angelico (Antonius Maria Alexander) Becchetti, O.P. † | Bologna | Bishop Emeritus of Città della Pieve, Italy |
| 69.8 | Died | Tommaso Cervioni, O.S.A. † | Archbishop Emeritus of Lucca, Italy |
| 12 Jan | 61.1 | Died | Giuseppe Barone † | Bishop of Calvi Risorta, Italy |
| 13 Jan | | Born | Alexandre-François-Amédée-Adonis-Louis-Joseph de Lauzières de Thémines † | Montpellier | Bishop of Blois, France |
| 22 Jan | 34.1 | Confirmed | Jean-Baptiste-Joseph de Méallet de Fargues † | Bishop of Saint-Claude, France |
| 44.8 | Appointed | Gaspar Negri † | Bishop of Poreč (Parenzo), Croatia |
| 73.1 | Resigned | Alonso del Pozo y Silva † | Archbishop of La Plata o Charcas, Bolivia | Archbishop Emeritus |
| 44.0 | Appointed | Petrus Antonius Raimondi † | Bishop of Capaccio, Italy |
| 67.3 | Appointed | Agustín Rodríguez Delgado † | Archbishop of La Plata o Charcas, Bolivia | Archbishop of Lima, Peru |
| 71.6 | Appointed | Filippo Carlo Spada † | Titular Patriarch of Alexandria {Alessandria} |
| 55.2 | Appointed | Francesco Antonio Spadea † | Bishop of Aquino e Pontecorvo, Italy | Bishop Emeritus |
| 55.2 | Appointed | Giovanni Andrea Tria (II) † | Bishop of Larino, Italy |
| 26 Jan | | Born | Florido Pierleoni, C.O. † | Città di Castello | Bishop of Acquapendente, Italy |
| 28 Jan | 38.2 | Ordained Bishop | Jacques-Marie de Caritat de Condorcet † | Bishop of Gap, France | Bishop of Lisieux, France |
| 44.0 | Ordained Bishop | Petrus Antonius Raimondi † | Bishop of Capaccio, Italy |
| 55.2 | Ordained Bishop | Francesco Antonio Spadea † | Bishop of Aquino e Pontecorvo, Italy | Bishop Emeritus |
| 55.2 | Ordained Bishop | Giovanni Andrea Tria (II) † | Bishop of Larino, Italy |
| 31 Jan | | Born | Giovanni Castiglione † | Ischia | Cardinal, Bishop of Osimo e Cingoli, Italy |
| 9 Feb | | Born | Michael Léopold Brigido von Marenfels und Bresoviz † | Trieste, Italy | Bishop of Spiš, Slovakia |
| 11 Feb | 29.1 | Ordained Bishop | Henri-Gaston de Lévis-Leran † | Bishop of Pamiers, France |
| 13 Feb | 82.5 | Retired | Girolamo Maria Allegri, O.S.M. † | Bishop of Cagli, Italy | Bishop Emeritus |
| 16 Feb | 77.1 | Died | Antoine Fagon † | Bishop of Vannes, France |
| 17 Feb | | Born | Charles de La Font de Savines † | Embrun | Bishop Emeritus of Viviers (Aps), France |
| 26.2 | Ordained Priest | Franz Xaver Twrdy † | Priest of Praha {Prague}, Czech Republic | Auxiliary Bishop |
| 18 Feb | 28.7 | Ordained Bishop | Josef Maria von Thun und Hohenstein † | Bishop of Gurk, Austria | Bishop of Passau, Germany |
| 20 Feb | | Born | José de Santa Escolástica Álvares (Alves) Pereira, O.S.B. † | Porto | Archbishop of São Salvador da Bahia, Brazil |
| 77.5 | Died | Marcellino Corio † | Cardinal, Cardinal-Deacon of Sant’Adriano al Foro |
| 58.1 | Selected | Pedro Morcillo Rubio de Suñón † | Bishop of Cuzco, Peru |
| 21 Feb | 65.1 | Died | Pedro Salazar Góngora † | Bishop of Córdoba, Spain |
| 24 Feb | 32.6 | Ordained Bishop | Georges-Gaspard-Alexis de Plan des Augiers † | Bishop of Die, France |
| 52.0 | Ordained Bishop | Franz Joachim Schmid von Altenstadt † | Titular Bishop of Lagania | Auxiliary Bishop of Regensburg, Germany |
| 73.6 | Died | Hendrik Jozef van Susteren † | Bishop of Brugge {Bruges}, Belgium |
| 28 Feb | 33.1 | Appointed | Donato Maria Arcangeli † | Bishop of Pescia, Italy |
| 48.8 | Appointed | Pedro Felipe de Azúa e Iturgoyen † | Bishop of Concepción, Chile | Archbishop Emeritus of Santafé en Nueva Granada, Colombia |
| 62.2 | Appointed | Salvador Bermúdez y Becerra † | Bishop of La Paz, Bolivia | Archbishop of La Plata o Charcas, Bolivia |
| 48.6 | Appointed | Francesco Bernardo de Cespedes † | Bishop of Bosa, Italy |
| 42.5 | Appointed | Francesco Agnello Fragianni † | Bishop of Calvi Risorta, Italy |
| 49.5 | Appointed | Niccolò Mancinforte † | Bishop of Senigallia, Italy | Bishop of Ancona e Numana, Italy |
| 53.7 | Appointed | Silvestro Merani, O.S.A. † | Titular Bishop of Porphyreon |
| Mar | 78.2 | Died | Jeronimo Herrera y Lopez † | Bishop of Nueva Segovia, Philippines |
| 3 Mar | 73.2 | Died | Tomás Crespo Agüero † | Archbishop of Zaragoza, Spain |
| 4 Mar | 24.0 | Ordained Priest | Clemente Maria (Vincent) Bardini, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Acquapendente, Italy |
| 49.5 | Ordained Bishop | Niccolò Mancinforte † | Bishop of Senigallia, Italy | Bishop of Ancona e Numana, Italy |
| 53.7 | Ordained Bishop | Silvestro Merani, O.S.A. † | Titular Bishop of Porphyreon |
| 5 Mar | 21.6 | Ordained Priest | Johann Theodor von Franken-Siersdorf † | Priest of Hildesheim, Germany | Vicar Apostolic of Upper and Lower Saxony (Hanover), Germany |
| 9 Mar | | Born | Benedetto Solari, O.P. † | Genova | Bishop of Noli, Italy |
| 11 Mar | 33.1 | Ordained Bishop | Donato Maria Arcangeli † | Bishop of Pescia, Italy |
| 17 Mar | | Born | Cyrillus Antonini † | Montis Bodii | Bishop of Anagni, Italy |
| 18 Mar | 75.4 | Died | Domenico Taglialatela † | Bishop of L’Aquila, Italy |
| 30 Mar | 77.3 | Retired | Jacques-Bénigne Bossuet † | Bishop of Troyes, France | Bishop Emeritus |
| Born | William Gregory Sharrock, O.S.B. † | Walton le Dale | Vicar Apostolic of Western District, England, Great Britain |
| 31 Mar | | Born | Orazio della Torre † | Palermo | Bishop of Mazara del Vallo, Italy |
| Apr | 64.2 | Died | Marco Antonio De Marco † | Archbishop of Manfredonia, Italy |
| 2 Apr | 35.5 | Selected | Jean-Joseph Chapelle de Saint-Jean de Jumilhac † | Bishop of Vannes, France | Archbishop of Arles, France |
| 35.3 | Appointed | Mathias Poncet de la Rivière † | Bishop of Troyes, France | Bishop Emeritus |
| 50.3 | Appointed | Paul de Ribeyre † | Bishop of Digne, France | Bishop of Saint-Flour, France |
| 4 Apr | | Born | Giuseppe Marra † | Reginen | Bishop of Nicotera, Italy |
| 13 Apr | 88.3 | Died | Joachim-Joseph d’Estaing de Saillans † | Bishop of Saint-Flour, France |
| 18 Apr | 46.9 | Appointed | Giuseppe Gallarati † | Bishop of Lodi, Italy | Bishop Emeritus |
| 52.4 | Appointed | Carlo Maria Lomellino † | Titular Archbishop of Hierapolis in Phrygia | Bishop Emeritus of Ajaccio, France |
| 58.3 | Confirmed | Pedro Morcillo Rubio de Suñón † | Bishop of Cuzco, Peru |
| 45.7 | Appointed | Antonius Nani † | Archbishop of Corfù, Greece |
| 25 Apr | 46.9 | Ordained Bishop | Giuseppe Gallarati † | Bishop of Lodi, Italy | Bishop Emeritus |
| 26 Apr | | Born | Giuseppe Maria Bressa, O.S.B. † | Venezia | Bishop of Concordia (Sagittaria), Italy |
| May | 83.1 | Died | François-Maurice Gontieri (de Gonteriis) † | Archbishop of Avignon, France |
| 4 May | 65.7 | Died | Pedro Ayala, O.P. † | Bishop Emeritus of Avila, Spain |
| 7 May | 58.5 | Selected | Juan de Castañeda Velásquez y Salazar † | Bishop of Panamá | Bishop of Cuzco, Peru |
| 12 May | 50.4 | Appointed | Paul de Ribeyre † | Bishop of Saint-Flour, France |
| 13 May | | Died | Joseph V Dergham El-Khazen † | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| 14 May | 64.2 | Died | Dominique-Marie Varlet † | Bishop Emeritus of Baghdad, Iraq |
| 15 May | 52.7 | Ordained Deacon | Carlo Maria Sacripante † | Deacon | Cardinal, Cardinal-Bishop of Frascati |
| 16 May | 61.1 | Resigned | Elias Daniel von Sommerfeld † | Auxiliary Bishop of Wrocław (Breslau), Poland | Auxiliary Bishop Emeritus |
| 19 May | 38.2 | Ordained Priest | Sebastiano Bonaiuti † | Priest | Bishop of Montefeltro, Italy |
| 49.6 | Ordained Priest | Philippus Josias Caucci † | Priest | Titular Patriarch of Constantinople |
| 29.5 | Ordained Priest | Charles Antoine de Grady † | Priest of Liège, Belgium | Auxiliary Bishop |
| 21 May | 24.5 | Selected | François-Armand-Auguste de Rohan-Soubise-Ventadour † | Coadjutor Bishop of Strasbourg, France | Cardinal, Bishop |
| 25 May | 37.4 | Appointed | Paulus Campsi † | Bishop of Shkodrë (Scutari), Albania |
| 43.8 | Appointed | Giuseppe Coppola, C.O. † | Bishop of L’Aquila, Italy | Bishop of Castellammare di Stabia, Italy |
| 46.5 | Appointed | Angelo Maria Marculli, O.S.A. † | Bishop of Città Ducale, Italy | Bishop of Bitetto, France |
| 44.7 | Appointed | Francesco Rivera † | Archbishop of Manfredonia, Italy |
| 41.7 | Appointed | Wacław Hieronim Sierakowski † | Bishop of Przemyśl, Poland | Archbishop of Lviv, Ukraine |
| 42.4 | Appointed | Michele Maria Vincentini † | Titular Archbishop of Teodosia |
| 27 May | 43.8 | Ordained Bishop | Giuseppe Coppola, C.O. † | Bishop of L’Aquila, Italy | Bishop of Castellammare di Stabia, Italy |
| 58.8 | Died | Joannes Ferro † | Bishop of Ossero (Osor), Croatia |
| 46.5 | Ordained Bishop | Angelo Maria Marculli, O.S.A. † | Bishop of Città Ducale, Italy | Bishop of Bitetto, France |
| 29 May | 34.4 | Appointed | Jean-Louis du Lau d’Allemans † | Bishop of Digne, France |
| 82.3 | Died | Domingo Valentín Guerra Arteaga y Leiba † | Bishop of Segovia, Spain |
| 31 May | 56.4 | Died | Bernardo Froilán Saavedra Sanjurjo † | Coadjutor Archbishop of Toledo, Spain |
| 12 Jun | 63.4 | Died | Sigismund Felix von Schrattenbach † | Bishop of Ljubljana, Slovenia |
| 24 Jun | 55.5 | Died | Juan Angel Rodríguez, O.SS.T. † | Archbishop of Manila, Philippines |
| 25 Jun | 64.3 | Died | Pedro Manuel Dávila Cárdenas † | Bishop of Plasencia, Spain |
| 26 Jun | 87.7 | Died | Stefano Fogliani † | Bishop of Modena, Italy |