| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Died | Matheus de Castro Malo, C.O. † | Titular Bishop of Chrysopolis in Arabia |
| Born | Jean-Louis du Bouschet de Sourches † | Paris | Bishop of Dol, France |
| 43.0 | Ordained Bishop | Alonso Bernardo de Ríos y Guzmán, O.SS.T. † | Bishop of Santiago de Cuba | Archbishop of Granada, Spain |
| 15.0 | Professed | Antonio de Silva, S.J. † | Member of Society of Jesus | Bishop of Nanking [Nanjing], China |
| Born | Jean d’Yse (d’Ize) de Saléon † | Grenoble | Archbishop of Vienne, France |
| Born | Manuel González Virtus † | Astudillo, Spain | Bishop of Córdoba (Tucumán), Argentina |
| 29.0 | Ordained Priest | Armand-Anne-Tristan de La Baume de Suze † | Priest | Archbishop of Auch, France |
| Died | Pedro Manso Zuñiga † | Auxiliary Bishop of Burgos, Spain |
| 30.4 | Ordained Priest | Giovanni Francesco Miller † | Priest of Trieste, Italy | Bishop |
| Born | José Pinheiro, S.J. † | Castello Branco | Bishop of São Tomé of Meliapore, India |
| Born | Alonso del Pozo y Silva † | Concepción | Archbishop Emeritus of La Plata o Charcas, Bolivia |
| Born | Matthew Pritchard, O.F.M. † | Graig | Vicar Apostolic Emeritus of Western District, England, Great Britain |
| Born | Michel-Celse-Roger de Rabutin de Bussy † | Paris | Bishop of Luçon, France |
| 53.9 | Died | Francisco Rodríguez Castañón † | Bishop of Calahorra y La Calzada, Spain |
| 63.0 | Died | Lorenzo Sampero † | Bishop of Ampurias e Civita, Italy |
| Born | Francisco Sánchez Márquez † | Cuenca, Spain | Titular Bishop of Amyclae |
| 43.0 | Ordained Priest | Friedrich von Tietzen-Schlütter † | Priest of Hildesheim, Germany | Auxiliary Bishop |
| Born | Gabriel Turchinovich, O.S.B.M. † | Sabnicza | Titular Bishop of Plataea |
| Died | Gothard Jan Tyzenhaus † | Bishop of Smoleńsk, Poland |
| Born | Jean-Jacques de Verthamon † | Chalucet | Bishop of (Saint-Lizier de) Couserans, France |
| Jan | | Died | Nicolás Rodríguez Hermosino † | Bishop of Astorga, Spain |
| 11 Jan | 47.0 | Appointed | James Phelan † | Bishop of Ossory, Ireland |
| 66.0 | Selected | Patrick Plunkett, O. Cist. † | Bishop of Meath, Ireland |
| 13 Jan | 23.0 | Ordained Priest | Peter Anton Gaus von Homberg † | Priest of Pedena, Austria | Bishop |
| 14 Jan | 30.5 | Appointed | Custodio do Pinho † | Titular Bishop of Hierapolis in Isauria |
| 56.1 | Appointed | Giacomo Franzoni † | Cardinal-Deacon of Santa Maria in Cosmedin | Cardinal, Bishop Emeritus of Camerino, Italy |
| 63.0 | Appointed | Sebastiano Pisani † | Titular Archbishop of Thessalonica | Bishop Emeritus of Verona, Italy |
| 47.0 | Appointed | Paolo Savelli † | Cardinal-Deacon of San Giorgio in Velabro | Cardinal, Cardinal-Deacon of Santa Maria in Cosmedin |
| 42.0 | Confirmed | István Sennyey † | Bishop of Veszprém, Hungary |
| 15 Jan | 56.0 | Appointed | Carlo Gualterio † | Cardinal-Priest of Sant’Eusebio | Cardinal, Archbishop Emeritus of Fermo, Italy |
| 19 Jan | | Born | Giuseppe Antonio Silvestri † | Campobasso | Bishop of Termoli, Italy |
| 20 Jan | 54.1 | Ordained Bishop | Gabriel-Philippe de Froullay de Tessé † | Bishop of Avranches, France |
| 27 Jan | 30.5 | Ordained Bishop | Custodio do Pinho † | Titular Bishop of Hierapolis in Isauria |
| 25.1 | Ordained Priest | Francesco Onofrio Hodierna † | Priest | Bishop Emeritus of Valva, Italy |
| 28 Jan | | Born | Pablo Vilana Perlas † | Barcelona, Spain | Archbishop of Salerno, Italy |
| Feb | 64.5 | Died | Giovanni Biancolella † | Bishop of Nicotera, Italy |
| Born | Jacques Rambert † | Chambery | Bishop of Aosta, Italy |
| 1 Feb | | Born | Giovanni Romano † | Simbario | Bishop of Catanzaro, Italy |
| 4 Feb | 59.1 | Appointed | Juan Lozano, O.S.A. † | Archbishop of Palermo, Italy | Bishop of Plasencia, Spain |
| 68.1 | Appointed | Frutos Bernardo Patón de Ayala † | Bishop of Sigüenza, Spain |
| Born | Raymund Ferdinand von Rabatta † | Gorizia | Bishop of Passau, Germany |
| Confirmed | Alfonso de Salizanes y Medina, O.F.M. Cap. † | Bishop of Oviedo, Spain | Bishop of Córdoba, Spain |
| 5 Feb | | Born | Francisco de Santiago y Calderón, O. de M. † | Torralba, Spain | Bishop of Antequera, Oaxaca, México |
| 10 Feb | 24.0 | Ordained Priest | Johann Jakob Senfft † | Priest of Mainz, Germany | Auxiliary Bishop Emeritus |
| 12 Feb | 42.2 | Died | Pompeo Valperga † | Bishop of Ivrea, Italy |
| 16 Feb | | Died | Ambrosius Landucci, O.S.A. † | Titular Bishop of Porphyreon |
| 18 Feb | 17.0 | Professed | Francesco Pignatelli (Sr.), C.R. † | Member of Congregation of Clerics Regular | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 25 Feb | | Born | Mattia Joccioa † | Capua | Bishop of Venafro, Italy |
| Mar | 73.2 | Died | Edmund O’Reilly † | Archbishop of Armagh, Ireland |
| Born | Antonio Pacecco, O.F.M. † | Frosinone | Bishop of Bisceglie, Italy |
| 2 Mar | 64.2 | Died | Francisco Gaeta (Caieta) † | Bishop of Bitetto, France |
| 8 Mar | | Appointed | William Burgat † | Archbishop of Cashel, Ireland |
| 43.2 | Appointed | James Lynch † | Archbishop of Tuam, Ireland |
| 66.2 | Confirmed | Patrick Plunkett, O. Cist. † | Bishop of Meath, Ireland |
| Appointed | Peter Talbot † | Archbishop of Dublin, Ireland |
| 10 Mar | 27.2 | Ordained Priest | Martin Bernhard Just von Friedenfeld † | Priest of Meißen (Meissen) {Lusazia o Lausitz; Sassonia}, Germany | Prefect |
| 11 Mar | | Born | Johann Baptist von Reinach-Hirzbach † | Porrentruy | Coadjutor Bishop of Basel, Switzerland |
| 50.5 | Confirmed | Matthäus Ferdinand Sobek von Bilenberg, O.S.B. † | Archbishop of Praha {Prague}, Czech Republic |
| 14 Mar | 52.2 | Died | Roger de Harlay de Cési † | Bishop of Lodève, France |
| Born | Pietro Priuli † | Venice | Cardinal, Bishop of Bergamo, Italy |
| 15 Mar | | Born | Philipp Carl von Fürstenberg † | | Bishop of Lavant, Slovenia |
| 16 Mar | 23.4 | Ordained Priest | Octavius Spader, O.F.M. † | Priest of Order of Friars Minor | Bishop of Assisi, Italy |
| 17 Mar | 49.0 | Selected | Bernardino León de la Rocha † | Bishop of Tui, Spain | Bishop of Coria, Spain |
| 18 Mar | 59.2 | Appointed | Honuphrius Ippoliti † | Titular Bishop of Porphyreon |
| Born | Carlo Maielli † | Napoli | Titular Archbishop of Hemesa |
| 51.2 | Installed | Vitaliano Visconti † | Cardinal-Priest of Sant’Agnese fuori le mura | Cardinal, Archbishop of Monreale, Italy |
| 20 Mar | | Born | Alamanno Salviati † | Florence, Italy | Cardinal, Cardinal-Priest of Santa Maria in Ara Coeli |
| 22 Mar | 25.7 | Ordained Priest | Giuseppe Ottavio Attavanti † | Priest | Bishop of Arezzo, Italy |
| 23 Mar | | Born | Faustino Giuseppe Griffoni Sant’Angelo † | Crema | Bishop of Crema, Italy |
| Born | Filippo Tipaldi † | Napoli | Bishop of Ariano, Italy |
| 1 Apr | | Born | Carlo Bossi † | Milan | Bishop of Vigevano, Italy |
| 20.3 | Appointed | Fulgenzio Arminio Monforti, O.S.A. † | Bishop of Nusco, Italy | Bishop Emeritus |
| 45.3 | Appointed | Filippo Alferio Ossorio † | Bishop of Fondi (Fundi), Italy |
| 39.3 | Appointed | Ignaas-August van Grobbendonck Schetz † | Bishop of Namur {Namen}, Belgium | Bishop of Gent {Ghent, Gand}, Belgium |
| 44.8 | Appointed | Marcantonio Vicentini † | Bishop of Foligno, Italy | Bishop Emeritus |
| 4 Apr | | Died | Francesco Grassi † | Bishop of Chioggia, Italy |
| 7 Apr | 20.3 | Ordained Bishop | Fulgenzio Arminio Monforti, O.S.A. † | Bishop of Nusco, Italy | Bishop Emeritus |
| 45.3 | Ordained Bishop | Filippo Alferio Ossorio † | Bishop of Fondi (Fundi), Italy |
| 44.8 | Ordained Bishop | Marcantonio Vicentini † | Bishop of Foligno, Italy | Bishop Emeritus |
| 10 Apr | | Succeeded | Placide-Louis du Chemin, O.S.B. † | Bishop of Baghdad, Iraq |
| Died | Jean Duval, O.C.D. † | Bishop of Baghdad, Iraq |
| 15 Apr | 31.3 | Selected | Louis de La Vergne-Montenard de Tressan † | Bishop of Vabres, France | Bishop of Le Mans, France |
| 33.3 | Selected | Jean-Armand de Rotondy de Biscarras † | Bishop of Lodève, France | Bishop of Béziers, France |
| 20 Apr | | Born | Louis-Daniel-Gabriel de Pestel de Levis de Trubières de Caylus † | Paris | Bishop of Auxerre, France |
| 21 Apr | 47.3 | Ordained Bishop | Valerio Maccioni † | Titular Bishop of Marocco o Marruecos, Titular Sees | Vicar Apostolic of Nordic Missions, Germany |
| 26 Apr | | Born | Álvaro Pires de Castro Noronha † | Lisboa | Bishop of Portalegre, Portugal |
| 28 Apr | 42.3 | Ordained Priest | Louis-Marie-Armand de Simiane de Gordes † | Priest | Bishop of Langres, France |
| 3 May | | Born | Teodoro Pongelli (Pungelli) † | S. Anatolia | Bishop Emeritus of Terni, Italy |
| 4 May | 50.6 | Installed | Matthäus Ferdinand Sobek von Bilenberg, O.S.B. † | Archbishop of Praha {Prague}, Czech Republic |
| 6 May | | Born | Francesco Antonio Finy † | Minervino | Cardinal, Bishop Emeritus of Tivoli, Italy |
| 12 May | 23.1 | Ordained Priest | Domenico Diez de Aux † | Priest | Bishop of Gerace, Italy |
| 39.4 | Ordained Bishop | Ignaas-August van Grobbendonck Schetz † | Bishop of Namur {Namen}, Belgium | Bishop of Gent {Ghent, Gand}, Belgium |
| 16 May | 43.4 | Ordained Bishop | James Lynch † | Archbishop of Tuam, Ireland |
| 19 May | | Died | Teodoro Balbo † | Archbishop of Zadar (Zara), Croatia |
| 20 May | | Born | Giovanni Battista Capuani † | Vallatae | Bishop of Belcastro, Italy |
| 22 May | 71.7 | Died | Philipp Friedrich von Breuner † | Bishop of Wien, Austria |
| 25 May | 69.7 | Died | Antonio Paiño Sevilla † | Archbishop of Sevilla {Seville}, Spain |
| 26 May | 36.4 | Ordained Priest | Lucalberto Patrizi † | Priest | Bishop of Perugia, Italy |
| 3 Jun | 45.8 | Confirmed | Albrecht Sigmund von Bayern † | Bishop of Regensburg, Germany | Bishop-Elect of Freising, Germany |
| 60.4 | Confirmed | Georges d’Aubusson de la Feuillade † | Archbishop (Personal Title) of Metz, France | Bishop |
| Appointed | Antonio Fernandez de Campo y Angulo † | Bishop of Coria, Spain | Bishop of Jaén, Spain |
| 36.4 | Appointed | Lucalberto Patrizi † | Bishop of Perugia, Italy |
| 54.4 | Appointed | Mikolaj Słupski † | Auxiliary Bishop of Vilnius, Lithuania |
| 54.4 | Appointed | Mikolaj Słupski † | Titular Bishop of Gratianopolis | Auxiliary Bishop of Vilnius, Lithuania |
| 36.4 | Appointed | Gaspare Toralto † | Bishop of Bitetto, France | Bishop of Tricarico, Italy |
| 45.8 | Appointed | Giacinto Trucchi, O.P. † | Bishop of Ivrea, Italy |
| 4 Jun | 62.4 | Died | Jan Różycki † | Bishop of Chełm, Poland |
| 9 Jun | | Died | Giovanni Lucas Moncalvi † | Bishop of Guardialfiera (Guardia), Italy |
| 15 Jun | 23.8 | Ordained Priest | Nikola Bijanković, C.O. † | Priest of Confederation of Oratorians of St. Philip Neri | Bishop of Makarska, Croatia |
| 16 Jun | 26.4 | Ordained Priest | Eleonoro Pacello † | Priest | Bishop of Pula (Pola), Croatia |
| 24.5 | Ordained Priest | Johann Franz Christoph von Talmberg † | Priest of Praha {Prague}, Czech Republic | Bishop of Hradec Králové, Czech Republic |
| 58.6 | Resigned | Pietro Vidoni (Sr.) † | Bishop of Lodi, Italy | Cardinal, Bishop Emeritus |
| 17 Jun | | Appointed | Girolamo Cori (de Coris) † | Bishop of Sovana (Soana), Italy |
| 49.5 | Appointed | Estevão dos Santos Carneiro de Moraes, C.R.S.A. † | Bishop of São Salvador da Bahia, Brazil |
| 74.5 | Appointed | Giovanni Antonio Geloso † | Bishop of Patti, Italy |
| 40.5 | Appointed | Álvaro de São Boaventura, O.F.M. † | Bishop of Guarda, Portugal | Bishop of Coimbra, Portugal |
| 60.5 | Appointed | Pedro Vieira da Silva † | Bishop of Leiria, Portugal |
| 20 Jun | | Born | Johann Joseph Ignaz Freyschlag von Schmidenthal † | Crostwitz | Prefect of Meißen (Meissen) {Lusazia o Lausitz; Sassonia}, Germany |
| 76.5 | Died | Dominique Marini † | Archbishop of Avignon, France |
| 23 Jun | 74.5 | Ordained Bishop | Giovanni Antonio Geloso † | Bishop of Patti, Italy |
| Died | Maffeo Vitale, O.F.M. † | Bishop of Mantova, Italy |
| 28 Jun | 52.5 | Selected | Wilderich von Walderdorff † | Bishop of Wien, Austria |