| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Alonso de Balmaseda, O.S.A. † | Corduben | Bishop of Zamora, Spain |
| Born | Niccolo Pietro Bargellini † | | Titular Patriarch of Jerusalem {Gerusalemme}, Palestine |
| Born | Francisco Barreto † | Serpa | Bishop of Faro {Algarve}, Portugal |
| Born | Antoine-François Bertier † | Toulouse | Bishop of Rieux, France |
| 27.0 | Appointed | Henri de Béthune † | Bishop of Maillezais, France | Archbishop of Bordeaux, France |
| Born | Otto de la Bourde † | Cheb, Czech Republic | Bishop of Gurk, Austria |
| 86.0 | Died | Giovanni Ambrogio Caccia † | Bishop Emeritus of Castro [del Lazio], Italy |
| Born | Fortunato Ilario Carafa della Spina † | Naples | Cardinal, Bishop of Aversa, Italy |
| Born | Juan Cano Sandoval † | México | Bishop of Yucatán (Mérida), México |
| 34.9 | Ordained Priest | Pedro Carrillo y Acuña † | Priest | Archbishop of Santiago de Compostela, Spain |
| Resigned | Francisco de Castro † | Bishop of Guarda, Portugal | Bishop Emeritus |
| Born | Marco Antonio Contestabile † | Stilo | Bishop of Bova, Italy |
| Appointed | Fabrizio degli Antinori † | Archbishop of Otranto, Italy |
| Died | Fabrizio degli Antinori † | Archbishop of Otranto, Italy |
| Born | Antonio de León y Becerra † | Madrid, Spain | Bishop of Arequipa, Peru |
| Born | Francisco de Lima (Lemos), O. Carm. † | Lisboa, Portugal | Bishop of Olinda, Brazil |
| Born | Camillo de Mari, C.R.S. † | Januae | Bishop of Nebbio, France |
| Born | Francesco de’ Marini † | Genova | Bishop Emeritus of Molfetta, Italy |
| Born | Vincenzo Maria de Silva, O.P. † | Aversan | Bishop of Calvi Risorta, Italy |
| Born | Estevão Brioso de Figueiredo † | Évora, Portugal | Bishop of Funchal, Portugal |
| Born | Miguel Lorenzo de Frías y Espinel † | Egea de los Caballeros | Bishop of Jaca, Spain |
| Born | Giuseppe Nicola Giberti † | San Ginesio | Bishop Emeritus of Teano, Italy |
| Born | José González, O. de M. † | Escuriali | Bishop of Plasencia, Spain |
| Born | Antonio González de Acuña, O.P. † | Lima, Peru | Bishop of Caracas, Santiago de Venezuela |
| Born | Angelus Grimaldi, O.P. † | Ianuen | Auxiliary Bishop of Albano, Italy |
| 56.1 | Resigned | Francisco Hurtado de Mendoza y Ribera † | Bishop of Plasencia, Spain | Bishop Emeritus |
| Born | Pietro Isimbardi, O. Carm. † | Papien | Bishop of Cremona, Italy |
| Born | Guillaume de La Brunetière du Plessis-Gesté † | Angers | Bishop of Saintes, France |
| Born | Paul-Louis-Philippe de Lézay de Lusignan † | Poitou | Bishop of Rodez, France |
| Born | Sebastiano Leopardi † | | Bishop of Venafro, Italy |
| Born | François Letellier † | Paris | Bishop of Digne, France |
| Born | Juan Leyva † | Castro del Río | Bishop of Almería, Spain |
| Born | Petrus de La Serena, O.S.H. † | Cabeza de Buey | Bishop of Trujillo, Peru |
| Appointed | Roche MacGeoghegan, O.P. † | Bishop of Kildare, Ireland |
| Born | Antonio Manrique de Guzmán † | | Patriarch of West Indies, Spain |
| Born | Guillaume Mahot, M.E.P. † | Argentan, France | Vicar Apostolic of Cochin {Cocincina}, Viet Nam |
| Born | Domenico Massimo † | Roma | Bishop of Corneto (Tarquinia) e Montefiascone, Italy |
| Born | Antonio Medina Cachon y Ponce de Leon † | Mayorga de Campos | Bishop of Cartagena (en España) |
| Born | Gaspar Barata de Mendonça † | Lisboa, Portugal | Archbishop Emeritus of São Salvador da Bahia, Brazil |
| Born | Petrus Mieszkowski † | Posnanien | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 55.0 | Died | Michael Masserotti (Misserotti), O.F.M. Conv. † | Bishop of Bitetto, France |
| Born | Dionisio Petra, O.S.B. † | Vastogirardi | Bishop of Capri, Italy |
| Born | François-Placide de Baudry de Piancourt, O.S.B. † | Evreux | Bishop of Mende, France |
| Born | Francisco Pizaro de Orellana † | Manila | Bishop of Nueva Segovia, Philippines |
| Born | Agostino Premoli † | Cremen | Bishop of Concordia (Sagittaria), Italy |
| Born | Richard Russell † | Berkshire, Great Britain | Bishop of Viseu, Portugal |
| Born | Pedro de Salazar Gutiérrez de Toledo, O. de M. † | Málaga, Spain | Cardinal, Bishop of Córdoba, Spain |
| Born | Johannes Schmitzberger, O.S.B. † | Neukirchen | Auxiliary Bishop of Wien, Austria |
| Born | Augustinus de Serralde, O.F.M. † | Mexico | Auxiliary Bishop of Sigüenza, Spain |
| Born | Filippo Soldani † | Florence | Bishop of Fiesole, Italy |
| Born | Claude de Saint-Georges † | Montceaux-l’Etoile | Archbishop of Lyon, France |
| Born | Stanisław Jacek Święcicki † | | Bishop of Chełm, Poland |
| 61.0 | Died | Evangelista Tornioli, O.S.B. † | Bishop of Città di Castello, Italy |
| Born | Francesco Verde † | S. Antonii | Bishop Emeritus of Vico Equense, Italy |
| Born | Ignaas-August van Grobbendonck Schetz † | Silvaeducen | Bishop of Gent {Ghent, Gand}, Belgium |
| Born | Claudius de Villagómez † | Legionen | Titular Bishop of Traianopolis in Rhodope |
| Born | Jan Stanisław Witwicki † | Smolnik | Bishop of Poznań, Poland |
| 7 Jan | 49.0 | Appointed | Jerónimo Manrique de Lara y de Herrera, O. de M. † | Bishop of Santiago de Cuba | Bishop of Santiago de Cuba |
| 61.0 | Appointed | Sebastiano Ricci † | Bishop of Città della Pieve, Italy |
| 8 Jan | | Succeeded | Clemente Confetti (Confetto) † | Bishop of Muro Lucano, Italy | Bishop of Acerno, Italy |
| 70.0 | Died | Tomeo Confetto † | Bishop of Muro Lucano, Italy |
| 9 Jan | 85.0 | Died | Juan de Zapata y Sandoval, O.S.A. † | Bishop of Guatemala (Santiago de Guatemala), Guatemala |
| 14 Jan | | Died | Juan de la Sal † | Auxiliary Bishop of Sevilla {Seville}, Spain |
| 19 Jan | 58.0 | Died | Eustachy Wołłowicz † | Bishop of Vilnius, Lithuania |
| 24 Jan | | Died | Vincent Correrio Cammerota (Malatesta), O.P. † | Coadjutor Bishop Emeritus of Muro Lucano, Italy |
| 26 Jan | 36.9 | Appointed | Franz Wilhelm von Wartenberg † | Bishop of Verden, Germany | Cardinal, Bishop of Regensburg, Germany |
| 28 Jan | 47.1 | Appointed | Modernus (Fabrizio) Caracciolo Piscizi † | Bishop of Oppido Mamertina, Italy |
| 35.7 | Ordained Bishop | Cesare Monti † | Titular Patriarch of Antiochia {Antioch} | Cardinal, Archbishop of Milano {Milan}, Italy |
| 56.1 | Appointed | Giulio Savelli † | Archbishop of Salerno, Italy | Cardinal, Cardinal-Bishop of Frascati |
| 47.2 | Confirmed | Anselm Casimir Wambold von Umstadt † | Archbishop of Mainz, Germany |
| 30 Jan | 43.2 | Appointed | Johann Fiernhammer † | Auxiliary Bishop of Freising, Germany |
| 43.2 | Appointed | Johann Fiernhammer † | Titular Bishop of Dariensis | Auxiliary Bishop of Freising, Germany |
| 76.1 | Died | Luis Jerónimo Oré, O.F.M. † | Bishop of Concepción, Chile |
| Feb | | Born | Horatius Ondedei † | Eugubin | Bishop of Urbania-Sant’Angelo in Vado, Italy |
| 3 Feb | | Born | Giovanni Rasino † | Milano | Bishop of Vigevano, Italy |
| 5 Feb | | Died | Francisco Sotomayor, O.F.M. † | Archbishop of La Plata o Charcas, Bolivia |
| 8 Feb | | Born | Pierre-Daniel Huet † | Caen | Bishop Emeritus of Avranches, France |
| 11 Feb | 80.1 | Died | Lorenzo Monzonís Galatina, O.F.M. † | Bishop of Pozzuoli, Italy |
| 12 Feb | 47.1 | Selected | Tommaso d’Ancora (Ariconi), C.R. † | Bishop of Mottola (Motula), Italy | Archbishop of Trani, Italy |
| 68.1 | Died | Gabriel Trejo y Paniagua † | Cardinal, Archbishop of Salerno, Italy |
| 14 Feb | | Installed | Hernando de Arias y Ugarte † | Archbishop of Lima, Peru |
| 18 Feb | 32.0 | Appointed | Consalvo Caputo † | Bishop of San Marco (Argentano), Italy | Bishop of Catanzaro, Italy |
| Appointed | Giovanni Battista Piccolomini † | Auxiliary Bishop of Sabina, Italy | Bishop of Chiusi, Italy |
| Appointed | Giovanni Battista Piccolomini † | Titular Bishop of Salamis | Bishop of Chiusi, Italy |
| 24 Feb | | Ordained Bishop | Giovanni Battista Piccolomini † | Titular Bishop of Salamis | Bishop of Chiusi, Italy |
| 28 Feb | | Died | Alonso Godina † | Auxiliary Bishop of Sevilla {Seville}, Spain |
| Mar | | Born | Giovanni Battista de Belli † | Rodi | Bishop of Telese o Cerreto Sannita, Italy |
| 2 Mar | 62.2 | Died | Alberto Rengjich di Ragusa, O.F.M. † | Bishop of Smederevo (Semendria), Serbia |
| 4 Mar | | Appointed | Jean Guérin † | Bishop of Grasse, France |
| 51.2 | Confirmed | Raymond de Montaigne † | Bishop of Bayonne, France |
| Appointed | Andrea Soffiani † | Bishop of Santorini {Thira}, Greece | Bishop of Chios (Scio), Greece |
| 18 Mar | 53.2 | Appointed | Engelbert des Bois † | Bishop of Namur {Namen}, Belgium |
| 60.9 | Confirmed | Servaas de Quinckere † | Bishop of Brugge {Bruges}, Belgium |
| Appointed | Antonio Viedma Chaves, O.P. † | Coadjutor Bishop of Almería, Spain | Bishop |
| 22 Mar | | Died | Carlo Argentero † | Bishop of Mondovi, Italy |
| 55.2 | Appointed | Agustin de Hinojosa y Montalvo, O.F.M. † | Bishop of Nicaragua |
| 23 Mar | | Born | Ignace Cotolendi † | Brignoles, France | Vicar Apostolic of Kiangnan, China |
| 24 Mar | | Died | Alfonso Giglioli † | Bishop of Anglona-Tursi, Italy |
| Born | José Sáenz de Aguirre, O.S.B. † | Logroño, Spain | Cardinal, Cardinal-Priest of Santa Maria sopra Minerva |
| 40.2 | Appointed | István Sennyey † | Bishop of Győr (Raab), Hungary |
| Apr | | Born | Juan de Isla † | Isla | Archbishop of Burgos, Spain |
| 3 Apr | | Died | Paolo Torelli † | Archbishop Emeritus of Rossano, Italy |
| 11 Apr | 64.1 | Selected | Gregorio Parcero de Castro, O.S.B. † | Bishop of Perpignan-Elne, France | Bishop of Tortosa, Spain |
| 22 Apr | | Appointed | Imre Lósy † | Bishop of Varaždin, Croatia | Archbishop of Esztergom, Hungary |
| 78.3 | Appointed | Martín Terrer Valenzuela, O.S.A. † | Archbishop of Zaragoza, Spain |
| 30 Apr | 76.3 | Died | Marcin Szyszkowski † | Bishop of Kraków, Poland |
| 6 May | 24.3 | Ordained Priest | Maxmilián Rudolf Schleinitz † | Priest of Praha {Prague}, Czech Republic | Bishop of Litoměřice, Czech Republic |
| 10 May | | Died | Camillo Moro † | Bishop of Comacchio, Italy |
| 12 May | 26.7 | Selected | François Adhémar de Monteil de Grignan † | Bishop of Saint-Paul-Trois-Châteaux, France | Archbishop of Arles, France |
| 13 May | | Appointed | Gasparo Cecchinelli † | Bishop of Corneto (Tarquinia) e Montefiascone, Italy |
| 45.4 | Appointed | Martín de León Cárdenas, O.S.A. † | Bishop of Trivento, Italy | Archbishop of Palermo, Italy |
| 65.4 | Resigned | Laudivio Zacchia † | Bishop of Corneto (Tarquinia) e Montefiascone, Italy | Cardinal, Bishop Emeritus |
| 18 May | 49.4 | Appointed | Ciriaco Rocci † | Apostolic Nuncio to Germany | Cardinal, Titular Archbishop of Patrae (Veters) |
| 20 May | 45.4 | Ordained Bishop | Martín de León Cárdenas, O.S.A. † | Bishop of Trivento, Italy | Archbishop of Palermo, Italy |
| 32.8 | Appointed | Ranuccio (Ranuzio) Scotti Douglas † | Apostolic Nuncio to Switzerland | Bishop Emeritus of Borgo San Donnino, Italy |
| 21 May | 30.5 | Installed | Carlo Emanuele von Madruzzo † | Bishop of Trento, Italy |
| 1 Jun | | Born | Carlo Barberini † | Rome, Italy | Cardinal, Prefect of the Congregation for Propagation of the Faith |
| 2 Jun | | Born | Vincenzo Bonifacio † | Rhodigii | Titular Bishop of Famagusta |
| 10 Jun | | Appointed | Honoratus Visconti † | Titular Archbishop of Larissa in Thessalia |
| 19 Jun | 38.5 | Died | Pietro Carpegna † | Bishop of Gubbio, Italy |
| 21 Jun | | Died | Alsono Martín de Zuñiga † | Bishop of Osma, Spain |
| 25 Jun | 57.0 | Died | Guillaume Le Gouverneur † | Bishop of Saint-Malo, France |
| 28 Jun | 45.5 | Appointed | Malachy O’Queely † | Archbishop of Tuam, Ireland |