| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Died | Garcerán Albañell † | Archbishop of Granada, Spain |
| Born | Petrus Alberini † | Roma | Titular Archbishop of Nicomedia |
| Born | Otto Reinhold Andrimont, O.S.A. † | Andrimont | Auxiliary Bishop Emeritus of Praha {Prague}, Czech Republic |
| Born | Juan Aparicio Navarro † | Brías | Bishop of León, Spain |
| Died | Vincenzo Bacallar † | Bishop of Bosa, Italy |
| Born | Gabriel de Blauza † | Blaouza, Lebanon | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| Born | Johannes Brassert † | Köln | Auxiliary Bishop of Speyer, Germany |
| Died | Francesco Brusco † | Bishop of Lettere (-Gragnano), Italy |
| Succeeded | Andrea Caputo † | Bishop of Lettere (-Gragnano), Italy |
| Born | Stefan Knezevic (de Comitibus), O.F.M. † | Ciprovci | Archbishop of Sardica (Sredek, Sofia), Bulgaria |
| 55.0 | Died | Giovanni Collesius, O.F.M. † | Coadjutor Bishop of Mostar, Bosnia and Herzegovina |
| Born | Francesco Berardino Corradini † | Fabriano | Bishop of Marsi, Italy |
| 89.0 | Died | Miguel de Castro † | Archbishop of Lisboa {Lisbon}, Portugal |
| Died | Zaccaria della Vecchia † | Bishop of Torcello (Turris), Italy |
| Born | Jakub Franciszek Dłuski, O.F.M. Conv. † | Dlugie | Bishop of Bacău, Romania |
| 66.0 | Died | François de Donadieu † | Bishop of Auxerre, France |
| Appointed | Barthélemy de Donnadieu de Griet † | Bishop of (Saint-Bernard de) Comminges, France |
| Died | Martín Fernández Portocarrero † | Bishop of Ciudad Rodrigo, Spain |
| Died | Antonio de Franchis, C.R. † | Bishop of Andria, Italy |
| Died | Octave Isnard † | Bishop of Glandèves, France |
| Born | Konstanty Samuel Lipski † | Gnesnen | Archbishop of Lviv, Ukraine |
| Born | Lodovico Malaspina, O. Carm. † | Ponte | Bishop of Sansepolcro (Borgo San Sepolcro), Italy |
| 54.0 | Appointed | João Manuel de Ataíde † | Bishop of Coimbra, Portugal | Archbishop of Lisboa {Lisbon}, Portugal |
| 43.0 | Died | Francesco Maria de Marra † | Bishop of Ascoli Satriano, Italy |
| 25.0 | Ordained Priest | Heber MacMahon (McMahon) † | Priest | Bishop of Clogher, Ireland |
| 60.1 | Died | Philibert François (Filiberto) Milliet de Faverges † | Archbishop of Torino {Turin}, Italy |
| Ordained Priest | Kaspar Münster, O. Carm. † | Priest of Order of Our Lady of Mt. Carmel | Auxiliary Bishop of Osnabrück, Germany |
| Died | Nicolaus Necansus, O.F.M. † | Bishop of Mostar, Bosnia and Herzegovina |
| Born | Johannes Baptista van Neercassel † | Gorinchem | Vicar Apostolic of Batavia (Holland Mission), Netherlands |
| Born | Giovanni Battista Nepita † | Castrovillari | Bishop of Massa Lubrense, Italy |
| 66.0 | Appointed | Lorenzo Nieto y Corrales Montero Nieto, O.S.B. † | Archbishop of Cagliari, Italy |
| Born | Francesco Pannocchieschi † | | Archbishop of Pisa, Italy |
| Resigned | Giovanni Luigi Pasolini, O. Carm. † | Bishop of Segni, Italy | Bishop Emeritus |
| 54.0 | Appointed | Panfilo Persico † | Bishop of Belluno, Italy |
| Died | Antonius de Pozega (Poseca), O.F.M. † | Bishop of Scardona (Skradin), Italy |
| Born | Juan Pérez de Corcha † | Andújar | Bishop-Elect of La Paz, Bolivia |
| 44.0 | Resigned | Marco Antonio (Sebastianus) Quirino, O. Cruc. † | Archbishop of Naxos, Greece | Archbishop Emeritus |
| Born | Tommaso Retano † | Venice | Bishop Emeritus of Adria, Italy |
| Resigned | Alphonse Sacrati † | Bishop of Comacchio, Italy | Bishop Emeritus |
| Born | Juan Sáenz de Valatorre † | | Auxiliary Bishop of Burgos, Spain |
| Born | Camillus Sanseverino, C.R. † | Januen | Auxiliary Bishop of Sabina, Italy |
| Appointed | Sebastião de São Pedro, O.S.A. † | Archbishop of Goa, India |
| 55.0 | Selected | Agostino Solaro di Moretta † | Bishop of Saluzzo, Italy | Bishop of Fossano, Italy |
| Born | Giovanni Battista Spínola † | Genova | Archbishop of Genova, Italy |
| Born | Albertus Stawowski † | Gniezno | Auxiliary Bishop of Gniezno, Poland |
| Ordained Priest | Nikolaus Aliprandi von Thomasis † | Priest of Passau, Germany | Auxiliary Bishop |
| Born | Alexander Dunbar Winchester (Winster) † | Garmouth | Prefect Emeritus of Scotland, Great Britain |
| Born | Jan Stanisław Zbąski † | Smardzenice | Bishop of Warmia (Ermland), Poland |
| Born | Andreas Zmaievich † | Perasto | Archbishop of Bar (Antivari), Montenegro |
| Jan | 43.0 | Died | Sébastien Le Bouthilier † | Bishop of Aire, France |
| 5 Jan | 41.0 | Ordained Bishop | Juan Arauz Díaz, O.F.M. † | Bishop of Guadix, Spain |
| 62.0 | Ordained Bishop | Diego Vela Becerril † | Bishop of Lugo, Spain | Bishop of Tui, Spain |
| 9 Jan | | Died | Antaldus degli Antaldi † | Bishop of Senigallia, Italy |
| 12 Jan | 56.2 | Ordained Bishop | Richard Smith † | Titular Bishop of Chalcedon | Vicar Apostolic Emeritus of England, Great Britain |
| 27 Jan | 45.1 | Appointed | Hyacinthus Arnolfini, O.F.M. † | Bishop of Milos (Melos), Greece |
| 56.1 | Appointed | Antonio (Marcello) Barberini (Sr.), O.F.M. Cap. † | Bishop of Senigallia, Italy | Cardinal, Major Penitentiary of the Apostolic Penitentiary |
| Appointed | Giovanni Maria Belletti † | Bishop of Gerace, Italy |
| Appointed | Gian Gerolamo Campanili † | Bishop of Isernia, Italy |
| 51.1 | Appointed | Giovanni Michele de Varolis, O.F.M. Conv. † | Bishop of Cefalonia e Zante, Greece | Bishop Emeritus |
| 37.1 | Appointed | Dominique de Vic † | Coadjutor Archbishop of Auch, France | Archbishop |
| 37.1 | Appointed | Dominique de Vic † | Titular Archbishop of Corinthus | Archbishop of Auch, France |
| 30 Jan | 60.1 | Died | Fabrizio Paolucci † | Bishop of Città della Pieve, Italy |
| Feb | 58.1 | Died | Marinus Bizzius (Bici) † | Archbishop Emeritus of Bar (Antivari), Montenegro |
| Born | Henri Van Halmaele † | Antverpien | Bishop of Ypres (Ieper), Belgium |
| 1 Feb | | Born | Antonio de Martini † | Pompeianae | Bishop of Sagone (Sagona), France |
| 2 Feb | 56.1 | Ordained Bishop | Antonio (Marcello) Barberini (Sr.), O.F.M. Cap. † | Bishop of Senigallia, Italy | Cardinal, Major Penitentiary of the Apostolic Penitentiary |
| 17 Feb | 43.9 | Ordained Bishop | Anton Crosini von Bonporto † | Titular Bishop of Belline | Bishop of Brixen {Bressanone}, Italy |
| 19 Feb | 48.1 | Appointed | Giovanni Atzori † | Bishop of Bosa, Italy | Bishop-Elect |
| Appointed | Cristóbal de Lobera y Torres † | Bishop of Córdoba, Spain | Bishop of Plasencia, Spain |
| Appointed | Pietro de Marchi, O.P. † | Archbishop of Izmir (Smirne), Turkey |
| 57.1 | Appointed | Alberto Rengjich di Ragusa, O.F.M. † | Bishop of Smederevo (Semendria), Serbia |
| 23 Feb | 45.1 | Ordained Bishop | Hyacinthus Arnolfini, O.F.M. † | Bishop of Milos (Melos), Greece |
| 24 Feb | 51.1 | Ordained Bishop | Giovanni Michele de Varolis, O.F.M. Conv. † | Bishop of Cefalonia e Zante, Greece | Bishop Emeritus |
| Mar | 60.2 | Died | Michelangelo Seghizzi, O.P. † | Bishop of Lodi, Italy |
| 3 Mar | 48.2 | Appointed | Vincenzo Caputo † | Bishop of Andria, Italy |
| Appointed | Marco Giustiniani † | Bishop of Torcello (Turris), Italy | Bishop of Verona, Italy |
| Appointed | Rodolfo Rodolfi-Sforza † | Bishop of Pula (Pola), Croatia |
| 45.2 | Appointed | Celso (Giuliano) Zani, O.F.M. † | Bishop of Città della Pieve, Italy | Bishop Emeritus |
| 5 Mar | 50.2 | Selected | Hieronymus Otto Agricola † | Bishop of Brixen {Bressanone}, Italy |
| 7 Mar | 32.4 | Professed | Gregorio Panzani, C.O. † | Member of Confederation of Oratorians of St. Philip Neri | Bishop of Mileto, Italy |
| 9 Mar | | Ordained Bishop | Giovanni Maria Belletti † | Bishop of Gerace, Italy |
| 16 Mar | 78.8 | Died | Alfonso de la Mota y Escobar † | Bishop of Tlaxcala, México |
| 17 Mar | 59.8 | Appointed | Juan Roco Campofrío, O.S.B. † | Bishop of Zamora, Spain | Bishop of Coria, Spain |
| 28 Mar | | Died | Luigi Lollino † | Bishop of Belluno, Italy |
| 29 Mar | | Selected | Jean de Plantavit de la Pause † | Bishop of Lodève, France | Bishop Emeritus |
| 1 Apr | | Born | Johann Euchar von Schenk von Castell † | Romanshorn | Bishop of Eichstätt, Germany |
| 7 Apr | 41.3 | Appointed | Paolo Coccapani † | Bishop of Reggio Emilia, Italy |
| 49.3 | Appointed | Julián de Cortázar † | Archbishop of Santafé en Nueva Granada, Colombia |
| 31.1 | Appointed | Giacomo Theodoli (Teodolo) † | Archbishop of Amalfi, Italy | Bishop Emeritus of Forli, Italy |
| Appointed | Gerolamo Maria Zambeccari, O.P. † | Bishop of Alife, Italy | Bishop Emeritus of Minervino Murge, Italy |
| 13 Apr | 41.3 | Ordained Bishop | Paolo Coccapani † | Bishop of Reggio Emilia, Italy |
| 19 Apr | | Died | Nicolas Bourgoin † | Bishop of Coutances, France |
| 20 Apr | | Installed | Gonzalo del Campo (López de Ocampo) † | Archbishop of Lima, Peru |
| 21 Apr | 44.3 | Appointed | Pompeo Coronini † | Bishop of Pedena, Austria | Bishop of Trieste, Italy |
| Appointed | Giovanni Maria Galli, O.F.M. † | Bishop of Santorini {Thira}, Greece |
| 29 Apr | | Born | Marco Antonio Marescotti † | | Bishop of Chiusi, Italy |
| 30 Apr | 57.8 | Selected | Pedro Apaolaza Ramírez, O.S.B. † | Bishop of Albarracin, Spain | Archbishop of Zaragoza, Spain |
| May | | Born | Giovanni Battista Amati † | Pistorien | Bishop of Nocera Umbra, Italy |
| 2 May | 50.3 | Confirmed | Hieronymus Otto Agricola † | Bishop of Brixen {Bressanone}, Italy |
| 3 May | 11.6 | Selected | Karl Ferdinand von Vasa (Wasa) † | Bishop of Wrocław (Breslau), Poland |
| 5 May | 37.3 | Appointed | Raffaele Schiattini † | Archbishop of Naxos, Greece |
| 8 May | | Born | Gasparo Carpegna † | Rome, Italy | Cardinal, Prefect of the Roman Curia - Other |
| 53.4 | Selected | Cristóbal Martínez de Salas, O. Praem. † | Bishop of Panamá |
| 17 May | 72.4 | Died | Francisco Gómez Rojas de Sandoval † | Cardinal, Cardinal-Priest of San Sisto |
| 21 May | | Appointed | Clemente Gera † | Bishop of Lodi, Italy |
| 25 May | 37.4 | Ordained Bishop | Dominique de Vic † | Titular Archbishop of Corinthus | Archbishop of Auch, France |
| Jun | 65.4 | Died | Pietro Capullio, O.F.M. Conv. † | Bishop of Conversano, Italy |
| Born | Ludovico della Quadra † | Carpi | Bishop Emeritus of Mottola (Motula), Italy |
| 9 Jun | 43.4 | Appointed | Francesco Andrea Gelsomino, O.S.A. † | Bishop of Ascoli Satriano, Italy |
| 50.4 | Appointed | Cosimo Mannucci † | Bishop of Terni, Italy |
| 40.4 | Appointed | John O’Cullenan † | Bishop of Raphoe, Ireland |
| Appointed | Hugh O’Reilly † | Bishop of Kilmore, Ireland | Archbishop of Armagh, Ireland |
| 63.4 | Appointed | Gabriel Trejo y Paniagua † | Cardinal, Archbishop of Salerno, Italy |
| 49.4 | Appointed | Franciscus Venturi † | Bishop of San Severo, Italy | Bishop Emeritus |
| 11 Jun | 68.4 | Died | Marco Cornaro (Corner) † | Bishop of Padova {Padua}, Italy |
| 18 Jun | 55.5 | Died | Agostino Solaro di Moretta † | Bishop of Fossano, Italy |
| 26 Jun | 70.4 | Died | Luis Fernández de Córdoba † | Archbishop of Sevilla {Seville}, Spain |
| 29 Jun | 60.1 | Ordained Bishop | Juan Roco Campofrío, O.S.B. † | Bishop of Zamora, Spain | Bishop of Coria, Spain |
| 30 Jun | 79.5 | Died | Pietro Lomellini, O.S.B. † | Bishop of Sagone (Sagona), France |