| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Charles de Bannes d’Avéjan † | | Bishop of Alès (Alais), France |
| 50.0 | Selected | Pierre-François Beauvau de Rivau † | Bishop of Sarlat, France |
| Born | Louis-Armand Chomel † | Paris | Bishop Emeritus of Orange, France |
| Died | James Cusack † | Bishop of Meath, Ireland |
| 64.0 | Resigned | Fabbro de Vecchi † | Bishop of Montalcino, Italy | Bishop Emeritus |
| Born | Paul-Alexandre de Guénet † | Rouen | Bishop of Saint-Pons-de-Thomières, France |
| Born | Louis-Guy de Guérapin de Vauréal † | Senonen | Bishop Emeritus of Rennes, France |
| Born | Basilio Lindi † | Lissina | Bishop of Sapë, Albania |
| 24.0 | Ordained Priest | Juan de Necolalde † | Priest | Archbishop of La Plata o Charcas, Bolivia |
| Born | Manuel de Ocio y Campo † | Celaya, México | Bishop of Cebu, Philippines |
| Born | Tomás Ratto Ottonelli † | Valencia | Bishop of Córdoba, Spain |
| Born | Alejo Fernando de Rojas y Acevedo † | Lima, Peru | Bishop of La Paz, Bolivia |
| Died | Ivan Antun Zboronac † | Bishop of Kotor (Cattaro), Montenegro | Bishop Emeritus |
| Jan | | Born | Filippo Felice del Prete † | Casalnuovo | Bishop of Conversano, Italy |
| 6 Jan | 81.0 | Died | Manoel Pereira, O.P. † | Bishop Emeritus of São Sebastião do Rio de Janeiro, Brazil |
| Born | Gaspar José Vázquez Tablada † | El Hito | Bishop of Oviedo, Spain |
| 12 Jan | 58.0 | Installed | Jan Stanisław Witwicki † | Bishop of Poznań, Poland |
| 13 Jan | | Born | Pietro Antonio Corsignani † | Celano | Bishop of Valva, Italy |
| 14 Jan | 58.0 | Appointed | Francesco Verde † | Bishop of Vico Equense, Italy | Bishop Emeritus |
| 16 Jan | | Selected | Blasius Jaklin † | Bishop of Knin, Croatia | Bishop of Nitra, Slovakia |
| 38.9 | Selected | Aleksandar Ignacije Mikulić Brokunovečki † | Bishop of Zagreb (Agram), Croatia |
| 18 Jan | 67.0 | Died | Orazio Mattei † | Cardinal, Cardinal-Priest of San Lorenzo in Panisperna |
| 24 Jan | 64.7 | Resigned | Bl. François de Laval de Montmorency † | Bishop of Québec, Canada | Bishop Emeritus |
| 25 Jan | 34.2 | Ordained Bishop | Jean-Baptiste de la Croix Chevrière de St. Vallier † | Bishop of Québec, Canada |
| 28 Jan | 35.1 | Appointed | Philip Michael Ellis, O.S.B. † | Vicar Apostolic of Western District, England, Great Britain | Bishop of Segni, Italy |
| 35.1 | Appointed | Philip Michael Ellis, O.S.B. † | Titular Bishop of Aureliopolis in Asia | Bishop of Segni, Italy |
| 46.1 | Confirmed | Bonaventure Giffard † | Vicar Apostolic of Midland District, England, Great Britain | Vicar Apostolic of London District, England, Great Britain |
| 43.1 | Appointed | James Smith † | Vicar Apostolic of Northern District, England, Great Britain |
| 43.1 | Appointed | James Smith † | Titular Bishop of Callipolis | Vicar Apostolic of Northern District, England, Great Britain |
| 30 Jan | 73.1 | Appointed | John Leyburn † | Vicar Apostolic of London District, England, Great Britain | Vicar Apostolic of England, Great Britain |
| Feb | 82.1 | Died | Giovanni Battista Repucci † | Bishop of Vico Equense, Italy |
| 1 Feb | 38.1 | Ordained Priest | Giorgio Emo † | Priest | Archbishop of Corfù, Greece |
| 11 Feb | | Born | Thomas Fabiani † | Maida | Bishop of Belcastro, Italy |
| 13 Feb | | Born | Luca Melchiore Tempi † | Florence | Cardinal, Cardinal-Priest of Santa Croce in Gerusalemme |
| 14 Feb | 73.1 | Died | Franciscus Aguado † | Bishop of Astorga, Spain |
| 20 Feb | | Appointed | Marcus Sorchich † | Titular Bishop of Plataea |
| 24 Feb | 73.1 | Appointed | Franciscus Liberati † | Titular Archbishop of Ephesus |
| 25 Feb | 55.1 | Ordained Bishop | Domingo de Orueta y Caceaga † | Bishop of Almería, Spain |
| 28 Feb | 46.2 | Appointed | Bonaventure Giffard † | Titular Bishop of Madaurus | Vicar Apostolic of London District, England, Great Britain |
| Mar | 58.1 | Died | Horatius Ondedei † | Bishop of Urbania-Sant’Angelo in Vado, Italy |
| 7 Mar | | Born | Thomaz Franciszek Czapski, O. Cist. † | Marienburg | Bishop of Chelmno (Culma, Kulm), Poland |
| Born | José Mezquía Díaz de Arrízola, O. de M. † | Salvatierra | Bishop of Solsona, Spain |
| 14 Mar | 54.2 | Died | Alfonso Galaz Torrero † | Bishop of Tui, Spain |
| 20 Mar | | Born | Giuseppe Livizzani Mulazzani † | Modena | Cardinal, Cardinal-Deacon of Santi Vito, Modesto e Crescenzia |
| 21 Mar | 24.2 | Ordained Priest | Franz Engelbert Barbo von Waxenstein † | Priest of Wrocław (Breslau), Poland | Auxiliary Bishop |
| 25 Mar | | Born | João de Moreira, O.F.M. † | Pinheiro, Portugal | Bishop of Santiago de Cabo Verde |
| 28 Mar | 35.2 | Ordained Bishop | Matias de Figueiredo e Mello † | Bishop of Olinda, Brazil |
| 29 Mar | 64.2 | Died | Lucas Fernández de Piedrahita † | Bishop of Panamá |
| 1 Apr | | Born | Benedetto Bussi † | Roma | Bishop of Recanati-Loreto, Italy |
| 3 Apr | 31.1 | Ordained Bishop | Johannes Petrus Verhorst † | Titular Bishop of Alba | Auxiliary Bishop of Trier, Germany |
| 6 Apr | 28.3 | Ordained Priest | François-Gaspard de La Mer de Matha † | Priest | Bishop of Aire, France |
| 8 Apr | | Died | Girolamo Barzellini † | Bishop of Cariati-Cerenzia, Italy |
| 57.3 | Died | Alberto de São Gonçalo da Silva † | Archbishop of Goa, India |
| 11 Apr | 24.0 | Ordained Priest | Niccolò di Domenico † | Priest | Bishop of Nocera de’ Pagani, Italy |
| 14 Apr | 65.3 | Died | Giambattista Febei † | Bishop of Acquapendente, Italy |
| 16 Apr | 45.3 | Ordained Priest | Carlo Palma † | Priest | Bishop of Fossombrone, Italy |
| Born | Giovanni Rossi, C.R. † | Capo di Monte | Archbishop of Taranto, Italy |
| 22 Apr | 46.3 | Ordained Bishop | Bonaventure Giffard † | Titular Bishop of Madaurus | Vicar Apostolic of London District, England, Great Britain |
| 25 Apr | 73.3 | Ordained Bishop | Franciscus Liberati † | Titular Archbishop of Ephesus |
| 29 Apr | 63.6 | Died | Claudio Ciccolini † | Bishop of Forli, Italy |
| May | 65.3 | Died | Francesco Sampero † | Bishop of Ampurias e Civita, Italy |
| 1 May | 83.3 | Died | François de Salignac de La Mothe-Fénelon † | Bishop of Sarlat, France |
| 6 May | 35.3 | Ordained Bishop | Philip Michael Ellis, O.S.B. † | Titular Bishop of Aureliopolis in Asia | Bishop of Segni, Italy |
| 8 May | 81.4 | Died | Alessandro Crescenzi, C.R.S. † | Cardinal, Bishop Emeritus of Recanati-Loreto, Italy |
| 9 May | 49.4 | Died | Felice Rospigliosi † | Cardinal, Cardinal-Deacon of Sant’Agata de’ Goti |
| 63.1 | Ordained Bishop | Johann Euchar von Schenk von Castell † | Bishop of Eichstätt, Germany |
| 13 May | | Installed | Manoel da Ressurreição, O.F.M. † | Archbishop of São Salvador da Bahia, Brazil |
| 43.4 | Ordained Bishop | James Smith † | Titular Bishop of Callipolis | Vicar Apostolic of Northern District, England, Great Britain |
| 16 May | 52.8 | Ordained Bishop | Albert Ernst von Wartenberg † | Titular Bishop of Laodicea in Phrygia | Auxiliary Bishop of Regensburg, Germany |
| 17 May | 32.8 | Appointed | Fulvio Astalli † | Cardinal-Deacon of Santa Maria in Cosmedin | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 53.0 | Appointed | Alessandro Avio † | Bishop of Pesaro, Italy | Bishop of San Severino (Marche), Italy |
| 37.3 | Appointed | Giorgio Barni † | Bishop of Piacenza, Italy |
| 40.4 | Appointed | Gasparo Cavalieri † | Cardinal-Deacon of San Giorgio in Velabro | Cardinal, Archbishop of Capua, Italy |
| 80.4 | Appointed | Gregory Fallon † | Bishop of Clonmacnoise, Ireland |
| 50.5 | Appointed | Eustachy Stanisław Kotowicz † | Bishop of Smoleńsk, Poland |
| 46.1 | Appointed | Domenico Morelli † | Bishop of Lucera, Italy |
| 35.1 | Appointed | Benedetto Pamphilj, O.S.Io.Hieros. † | Cardinal-Deacon of Sant’Agata de’ Goti | Cardinal, Librarian of the Vatican Library |
| 42.5 | Appointed | Augustyn Michal Stefan Radziejowski † | Cardinal, Archbishop of Gniezno, Poland |
| 62.0 | Appointed | Angelo Maria Ranuzzi † | Cardinal, Archbishop of Bologna, Italy |
| 39.9 | Appointed | Bartolomeo Rosa † | Bishop of Lavello, Italy |
| 23 May | 53.1 | Ordained Bishop | Alessandro Avio † | Bishop of Pesaro, Italy | Bishop of San Severino (Marche), Italy |
| 46.2 | Ordained Bishop | Domenico Morelli † | Bishop of Lucera, Italy |
| 39.9 | Ordained Bishop | Bartolomeo Rosa † | Bishop of Lavello, Italy |
| 28 May | | Born | Jaime Cortada Bru † | Barcelona | Archbishop of Tarragona, Spain |
| 66.0 | Died | Antonio Sanz Lozano † | Archbishop of Santafé en Nueva Granada, Colombia |
| 31 May | 44.4 | Appointed | Alfonso de Aloysio † | Bishop of Squillace, Italy |
| 60.0 | Appointed | Pietro Antonio d’Alessandro † | Bishop of San Marco (Argentano), Italy |
| 32.9 | Appointed | Marino Drago † | Bishop of Kotor (Cattaro), Montenegro | Bishop of Korčula (Curzola, Cursola), Croatia |
| 43.9 | Appointed | Andrea de Rossi, C.R. † | Archbishop of Rossano, Italy |
| 50.4 | Appointed | Giovanni Emblaviti † | Bishop of Belcastro, Italy |
| 58.4 | Appointed | José González, O. de M. † | Bishop of Ciudad Rodrigo, Spain | Bishop of Plasencia, Spain |
| 55.2 | Appointed | Dominicus Maria Marchese, O.P. † | Bishop of Pozzuoli, Italy |
| 40.4 | Appointed | Baldassarre Nosadini † | Bishop of Krk (Veglia), Croatia |
| 38.8 | Appointed | Carlo Olantes, O.P. † | Bishop of Stagno (Ston), Croatia |
| 56.1 | Appointed | Michael Ludovicus Tevenardi, O.P. † | Bishop of Saluzzo, Italy |
| 44.4 | Appointed | Giovanni Battista Visconti Aicardi, B. † | Bishop of Novara, Italy |
| Jun | | Born | Bartolomeo Castelli † | Interamnen | Bishop of Senigallia, Italy |
| Died | Giovanni Tommaso Pinelli, C.R. † | Bishop of Albenga, Italy |
| 3 Jun | 66.7 | Died | Max Heinrich von Bayern † | Archbishop of Köln {Cologne}, Germany |
| 4 Jun | | Born | Alexandre Milon † | Paris | Bishop of Valence, France |
| 5 Jun | 48.3 | Died | Filippo Massarenghi, C.O. † | Bishop of Bitonto, Italy |
| 7 Jun | 50.4 | Ordained Bishop | Giovanni Emblaviti † | Bishop of Belcastro, Italy |
| 8 Jun | 60.0 | Ordained Bishop | Pietro Antonio d’Alessandro † | Bishop of San Marco (Argentano), Italy |
| 32.9 | Ordained Bishop | Marino Drago † | Bishop of Kotor (Cattaro), Montenegro | Bishop of Korčula (Curzola, Cursola), Croatia |
| 43.9 | Ordained Bishop | Andrea de Rossi, C.R. † | Archbishop of Rossano, Italy |
| 55.3 | Ordained Bishop | Dominicus Maria Marchese, O.P. † | Bishop of Pozzuoli, Italy |
| 40.4 | Ordained Bishop | Baldassarre Nosadini † | Bishop of Krk (Veglia), Croatia |
| 56.1 | Ordained Bishop | Michael Ludovicus Tevenardi, O.P. † | Bishop of Saluzzo, Italy |
| Selected | Patrick Tyrrell (Tyrell), O.F.M. † | Bishop of Meath, Ireland |
| 44.4 | Ordained Bishop | Giovanni Battista Visconti Aicardi, B. † | Bishop of Novara, Italy |
| 12 Jun | 24.0 | Ordained Priest | Johann Baptist Gegg † | Priest of Eichstätt, Germany | Auxiliary Bishop of Worms, Germany |
| 23.6 | Ordained Priest | Carlo Francesco Giocoli † | Priest | Bishop of Capaccio, Italy |
| 28.9 | Ordained Priest | Giuseppe Schinosi † | Priest | Bishop of Caserta, Italy |
| 13 Jun | 44.4 | Ordained Bishop | Alfonso de Aloysio † | Bishop of Squillace, Italy |
| 14 Jun | 38.3 | Appointed | Giovanni Battista Costa † | Bishop of Sagone (Sagona), France |
| 45.8 | Appointed | Domenico Maria della Ciaja, O.P. † | Bishop of Sovana (Soana), Italy |
| 38.5 | Appointed | Giorgio Emo † | Archbishop of Corfù, Greece |
| 48.0 | Appointed | Marcus Antonius Rossi † | Bishop of Termoli, Italy | Bishop-Elect |
| 40.9 | Appointed | Giovanni Vusich † | Bishop of Nona (Nin), Croatia |
| 17 Jun | 73.5 | Died | Clemente Alvarez, O.P. † | Bishop of Guadix, Spain |
| 20 Jun | | Born | Domenico Antonio Brizi † | Borgo di San Pietro | Bishop of Marsi, Italy |
| 38.3 | Ordained Bishop | Giovanni Battista Costa † | Bishop of Sagone (Sagona), France |
| 43.9 | Ordained Priest | Friedrich Christian von Plettenberg zu Lenhausen † | Priest of Münster, Germany | Bishop |
| 58.5 | Ordained Bishop | Francesco Verde † | Bishop of Vico Equense, Italy | Bishop Emeritus |
| 23 Jun | | Died | Giovanni de Torrecilla y Cardenas † | Archbishop of Brindisi, Italy |
| 25 Jun | | Born | Silvester Merani, O.S.A. † | Levanto | Titular Bishop of Porphyreon |
| 27 Jun | 38.5 | Ordained Bishop | Giorgio Emo † | Archbishop of Corfù, Greece |
| 48.1 | Died | Marcus Antonius Rossi † | Bishop-Elect of Termoli, Italy |
| 41.0 | Ordained Bishop | Giovanni Vusich † | Bishop of Nona (Nin), Croatia |