| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | John Armstrong † | | Bishop of Down and Connor, Ireland |
| 89.0 | Died | Aimeric de Bragelone † | Bishop Emeritus of Luçon, France |
| 65.0 | Resigned | Matthieu de Castro Malo, C.O. † | Vicar Apostolic of Idalcan / Deccan / Bijapur, India | Vicar Apostolic Emeritus |
| 25.0 | Ordained Priest | Edward Comerford † | Priest | Archbishop of Cashel, Ireland |
| Born | Jean-Louis du Bouchet de Sourches † | | Bishop of Dol, France |
| 43.0 | Ordained Bishop | Alfonso Bernardo de los Ríos y Guzmán, O.SS.T. † | Bishop of Santiago de Cuba | Archbishop of Granada, Spain |
| Born | Charles de Fontaine des Montees † | | Bishop of Nevers, France |
| 45.0 | Ordained Bishop | Lucas Fernández de Piedrahita † | Bishop of Santa Marta, Colombia | Bishop of Panamá |
| Born | Manuel González y Virtus † | | Bishop of Córdoba (Tucumán), Argentina |
| 44.9 | Resigned | Pierre Lambert de la Motte, M.E.P. † | Vicar Apostolic of Cochin {Cocincina}, Viet Nam | Vicar Apostolic Emeritus |
| 29.0 | Ordained Priest | Armand-Anne-Tristan de La Baume de Suze † | Priest | Archbishop of Auch, France |
| 30.3 | Ordained Priest | Giovanni Francesco Miller † | Priest of Trieste, Italy | Bishop |
| Born | José Pinheiro, S.J. † | | Bishop of São Tomé of Meliapore, India |
| Born | Alonso del Pozo y Silva † | | Archbishop Emeritus of La Plata o Charcas, Bolivia |
| Born | Matthew Pritchard, O.F.M. Rec. † | | Vicar Apostolic of Western District, England, Great Britain |
| Born | Michel-Celse-Roger de Rabutin de Bussy † | | 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 † | | Titular Bishop of Amyclae |
| 57.0 | Ordained Bishop | Luis Tello de Olivares † | Bishop of Mondoñedo, Spain |
| 43.0 | Ordained Priest | Friedrich von Tietzen-Schlütter † | Priest of Hildesheim, Germany | Auxiliary Bishop |
| Born | Gabriel Turčinović, O.S.B.M. † | | Vicar Apostolic of Valachia (Križevci), Croatia |
| Died | Gothard Jan Tyzenhaus † | Bishop of Smoleńsk, Poland |
| Born | Jean-Jacques de Verthamon de Chalucet † | | Bishop of (Saint-Lizier de) Couserans (or Conserans), France |
| 11 Jan | 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 | 30.4 | Appointed | Custodio do Pinho † | Vicar Apostolic of Idalcan / Deccan / Bijapur, India | Vicar Apostolic of Malabar, India |
| 30.4 | Appointed | Custodio do Pinho † | Titular Bishop of Hierapolis in Isauria | Vicar Apostolic of Malabar, India |
| 56.1 | Appointed | Giacomo Franzoni † | Cardinal-Deacon of Santa Maria in Cosmedin | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 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 † | | Bishop of Termoli, Italy |
| 20 Jan | 54.0 | Ordained Bishop | Gabriel-Philippe de Froullay de Tessé † | Bishop of Avranches, France |
| 26.0 | Ordained Deacon | Francesco Onofrio Hodierna † | Deacon | Bishop Emeritus of Valva e Sulmona, Italy |
| 23 Jan | | Died | Nicolás Rodríguez Hermosino † | Bishop of Astorga, Spain |
| 27 Jan | 30.4 | Ordained Bishop | Custodio do Pinho † | Titular Bishop of Hierapolis in Isauria | Vicar Apostolic of Malabar, India |
| 26.0 | Ordained Priest | Francesco Onofrio Hodierna † | Priest | Bishop Emeritus of Valva e Sulmona, Italy |
| 28 Jan | | Born | Pablo Vilana Perlas † | | Archbishop of Salerno, Italy |
| 1 Feb | | Born | Giovanni Romano † | | Bishop of Catanzaro, Italy |
| 4 Feb | 58.8 | Appointed | Juan Lozano, O.S.A. † | Archbishop of Palermo, Italy | Bishop of Plasencia, Spain |
| 69.0 | Appointed | Frutos Bernardo Patón de Ayala † | Bishop of Sigüenza, Spain |
| Born | Raymund Ferdinand von Rabatta † | | Bishop of Passau, Germany |
| 51.0 | Confirmed | Alfonso de Salizanes y Medina, O.F.M. † | Bishop of Oviedo, Spain | Bishop of Córdoba, Spain |
| 5 Feb | 64.5 | Died | Giovanni Francesco Biancolella † | Bishop of Nicotera, Italy |
| Born | Francisco de Santiago y Calderón, O. de M. † | | Bishop of Antequera, Oaxaca, México |
| 10 Feb | 24.0 | Ordained Priest | Johann Jakob Senfft † | Priest of Mainz, Germany | Auxiliary Bishop Emeritus |
| 12 Feb | 42.1 | Died | Pompeo Valperga † | Bishop of Ivrea, Italy |
| 16 Feb | 73.1 | Died | Ambrogio 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 |
| Born | Jacques Rambert † | | Bishop of Aosta, Italy |
| 25 Feb | | Born | Mattia Joccia † | | Bishop of Venafro, Italy |
| 2 Mar | 64.1 | Died | Francesco Gaeta (Caieta) † | Bishop of Bitetto, Italy |
| 8 Mar | 65.1 | Appointed | William Burgat † | Archbishop of Cashel, Ireland |
| 45.1 | Appointed | James Lynch † | Archbishop of Tuam, Ireland |
| 71.0 | Died | Edmund O’Reilly † | Archbishop of Armagh, Ireland |
| 50.1 | Appointed | James O’Phelan † | Bishop of Ossory, Ireland |
| 66.1 | Confirmed | Patrick Plunkett, O. Cist. † | Bishop of Meath, Ireland |
| 50.6 | Appointed | Peter Talbot † | Archbishop of Dublin, Ireland |
| 9 Mar | 50.4 | Confirmed | Matthäus Ferdinand Sobek von Bilenberg, O.S.B. † | Archbishop of Praha {Prague}, Czechia |
| 10 Mar | 27.1 | Ordained Priest | Martin Bernhard Just von Friedenfeld † | Priest of Lausitz (Lusatia), Germany | Prefect |
| Born | Antonio da Frosinone Pacicco, O.F.M. Obs. † | | Bishop of Bisceglie, Italy |
| 11 Mar | | Born | Johann Baptist von Reinach-Hirzbach † | | Coadjutor Bishop of Basel, Switzerland |
| 13 Mar | | Confirmed | Josyf Volosynovskyj † | Bishop of Mukachevo (Munkács) (Ruthenian), Ukraine | Bishop Emeritus |
| 14 Mar | 53.2 | Died | Roger de Harlay de Cési † | Bishop of Lodève, France |
| Born | Pietro Priuli † | | Cardinal, Bishop of Bergamo, Italy |
| 15 Mar | | Born | Philipp Carl von Fürstenberg † | | Bishop of Lavant, Slovenia |
| 16 Mar | 32.2 | Professed | Nilo Catalano, O.S.B.I. † | Member of Ordine Basiliano Italiano di Grottaferrata | Archbishop of Durrës (Durazzo) (Albanian), Albania |
| 48.4 | Ordained Deacon | Jean Louis (Johann Ludwig) d’Elderen † | Deacon of Liège, Belgium | Bishop |
| 23.3 | Ordained Priest | Oktavije Janković-Spader, O.F.M. Obs. † | Priest of Order of Observant Friars Minor | Bishop of Assisi, Italy |
| 17 Mar | 48.9 | Selected | Bernardino León de la Rocha † | Bishop of Tuy, Spain | Bishop of Coria, Spain |
| 18 Mar | 59.2 | Appointed | Honuphrius Ippoliti † | Titular Bishop of Porphyreon |
| Born | Carlo Maielli † | | Titular Archbishop of Hemesa |
| 51.2 | Installed | Vitaliano Visconti † | Cardinal-Priest of Sant’Agnese fuori le mura | Cardinal, Archbishop of Monreale, Italy |
| 19 Mar | 15.1 | Entered | Antonio da Silva, S.J. † | Member of Society of Jesus | Former Bishop-Elect of Nanking [Nanjing], China |
| 20 Mar | | Born | Alamanno Salviati † | | Cardinal, Cardinal-Priest of Santa Maria in Ara Coeli |
| 22 Mar | 25.6 | Ordained Priest | Giuseppe Ottavio Attavanti † | Priest | Bishop of Arezzo, Italy |
| 23 Mar | | Born | Faustino Giuseppe Griffoni Sant’Angelo † | | Bishop of Crema, Italy |
| Born | Filippo Tipaldi † | | Bishop of Ariano, Italy |
| 1 Apr | | Born | Carlo Bossi † | | Bishop of Vigevano, Italy |
| 49.2 | Appointed | Fulgenzio Arminio Monforte, O.S.A. † | Bishop of Nusco, Italy | Bishop Emeritus |
| 35.2 | Appointed | Filippo Alferio Ossorio † | Bishop of Fondi (Fundi), Italy |
| 43.5 | Appointed | Ignaas August Schetz van Grobbendonck † | Bishop of Namur {Namen}, Belgium | Bishop of Gent {Ghent, Gand}, Belgium |
| 44.8 | Appointed | Marcantonio Vincentini † | Bishop of Foligno, Italy | Bishop Emeritus |
| 4 Apr | | Died | Francesco Grassi † | Bishop of Chioggia, Italy |
| 7 Apr | 49.2 | Ordained Bishop | Fulgenzio Arminio Monforte, O.S.A. † | Bishop of Nusco, Italy | Bishop Emeritus |
| 35.2 | Ordained Bishop | Filippo Alferio Ossorio † | Bishop of Fondi (Fundi), Italy |
| 44.8 | Ordained Bishop | Marcantonio Vincentini † | Bishop of Foligno, Italy | Bishop Emeritus |
| 10 Apr | 62.2 | Succeeded | Placide-Louis du Chemin, O.S.B. † | Bishop of Baghdad, Iraq |
| 71.9 | Died | Jean Duval, O.C.D. † | Bishop of Baghdad, Iraq |
| 15 Apr | 31.2 | Selected | Louis de La Vergne-Montenard de Tressan † | Bishop of Vabres, France | Bishop of Le Mans, France |
| 33.2 | Selected | Jean-Armand de Rotondy de Biscarras † | Bishop of Lodève, France | Bishop of Béziers, France |
| 20 Apr | 22.2 | Ordained Deacon | Raphael (Franz Otmar) Gottrau, O.S.B. † | Deacon of Order of Saint Benedict | Abbot Emeritus of Maria Einsiedeln, Switzerland |
| Selected | Bernardo de Izaguirre de los Reyes † | Archbishop of La Plata o Charcas, Bolivia |
| Born | Charles-Daniel-Gabriel de Pestel de Levis de Tubières de Caylus † | | Bishop of Auxerre, France |
| 21 Apr | 41.3 | Ordained Bishop | Valerio Maccioni † | Titular Bishop of Marocco o Marruecos, Titular Sees | Vicar Apostolic of Nordic Missions, Germany |
| 28 Apr | 42.3 | Ordained Priest | Louis-Marie-Armand de Simiane de Gordes † | Priest | Bishop of Langres, France |
| 3 May | | Born | Teodoro Pongelli (Pungelli) † | | Bishop Emeritus of Terni, Italy |
| 4 May | 50.6 | Installed | Matthäus Ferdinand Sobek von Bilenberg, O.S.B. † | Archbishop of Praha {Prague}, Czechia |
| 6 May | | Born | Álvaro Pires de Castro e Noronha † | | Bishop of Portalegre, Portugal |
| Born | Francesco Antonio Finy † | | Cardinal, Bishop Emeritus of Tivoli, Italy |
| 12 May | 23.1 | Ordained Priest | Domenico Diez de Aux † | Priest | Bishop of Gerace, Italy |
| 50.8 | Ordained Bishop | Peter Talbot † | Archbishop of Dublin, Ireland |
| 43.7 | Ordained Bishop | Ignaas August Schetz van Grobbendonck † | Bishop of Namur {Namen}, Belgium | Bishop of Gent {Ghent, Gand}, Belgium |
| 19 May | 61.3 | Died | Teodoro Balbo † | Archbishop of Zadar (Zara), Croatia |
| 20 May | | Born | Giovanni Battista Capuani † | | 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 | 45.4 | Ordained Bishop | James Lynch † | Archbishop of Tuam, Ireland |
| 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 |
| 49.6 | Appointed | Antonio Fernández del Campo Angulo y Velasco † | 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, Italy | Bishop of Tricarico, Italy |
| 45.7 | Appointed | Giacinto Trucchi, O.P. † | Bishop of Ivrea, Italy |
| 4 Jun | 62.4 | Died | Jan Różycki † | Bishop of Chełm, Poland |
| 9 Jun | 69.4 | 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 |
| 24.4 | Ordained Priest | Johann Franz Christoph von Talmberg † | Priest of Praha {Prague}, Czechia | Bishop of Hradec Králové, Czechia |
| 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 |
| 49.4 | Appointed | Estevão dos Santos Carneiro de Moraes, C.R.S.J.E. † | Bishop of São Salvador da Bahia de Todos os Santos, Brazil |
| 74.4 | Appointed | Giovanni Antonio Geloso † | Bishop of Patti, Italy |
| 40.4 | Appointed | Manuel de Noroña, O.F.M. † | Bishop of Guarda, Portugal | Bishop of Coimbra, Portugal |
| 60.4 | Appointed | Pedro Vieira da Silva † | Bishop of Leiria, Portugal |
| 20 Jun | | Born | Johann Joseph Ignaz Freyschlag von Schmidenthal † | | Prefect of Lausitz (Lusatia), Germany |
| 69.6 | Died | Didier Dominique Marini † | Archbishop of Avignon, France |
| 23 Jun | 74.4 | Ordained Bishop | Giovanni Antonio Geloso † | Bishop of Patti, Italy |
| Died | Maffeo Vitale, O.F.M. † | Bishop of Mantova, Italy |
| 28 Jun | 52.4 | Selected | Wilderich von Walderdorff † | Bishop of Wien, Austria |
| 30 Jun | 61.4 | Ordained Bishop | Vicente Margarit de Biure, O.P. † | Bishop of Perpignan-Elne, France |