| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Tommaso Acquaviva d’Aragona, O.P. † | Neritonen | Bishop of Bitonto, Italy |
| Born | Giovanni Battista Barsotti † | Lucca | Auxiliary Bishop of Praha {Prague}, Czech Republic |
| Born | Ottavio Boldoni, B. † | | Bishop of Teano, Italy |
| Born | John de Burgh † | Pales | Archbishop of Tuam, Ireland |
| Born | Angelo Celsi † | Rome, Italy | Cardinal, Prefect of the Congregation of the Council |
| Born | Ignazio Cianti, O.P. † | Roma | Bishop Emeritus of Sant’Angelo dei Lombardi e Bisaccia, Italy |
| Born | Luís de Cifuentes y Sotomayor, O.P. † | Sevilla, Spain | Bishop of Yucatán (Mérida), México |
| Died | René de Daillon du Lude † | Bishop of Bayeux, France |
| Born | Pierre de Broc † | | Bishop of Auxerre, France |
| Appointed | Charles-Salomon du Serre † | Bishop of Gap, France |
| Died | Alonso Fernández de Bonilla † | Archbishop of México, Federal District |
| Born | Paul Fieschi † | | Bishop of Toul, France |
| Died | Francesco Galbiati † | Bishop of Ventimiglia, Italy |
| 22.0 | Ordained Priest | Juan García Arlés † | Priest of Orihuela, Spain | Bishop |
| Born | Hieronymus Gradenigo † | | Patriarch of Aquileia, Italy |
| Born | Isaac Habert † | Paris | Bishop of Vabres, France |
| 41.0 | Ordained Bishop | Gregor Helfenstein † | Titular Bishop of Azotus | Auxiliary Bishop of Trier, Germany |
| Died | Giovanni Ingenerio † | Bishop of Capodistria (Capo d'Istria)(Koper), Slovenia |
| Born | Raphael Levacovich, O.F.M. † | Iascae | Archbishop of Achrida (Ochrida), Bulgaria |
| Born | Gaspare Litago † | Calaritan | Archbishop of Sassari, Italy |
| Born | Cristóbal de la Mancha y Velazco, O.P. † | Lima | Bishop of Buenos Aires, Argentina |
| Born | Vitaliano Marescano † | Catanzaro | Bishop of Umbriatico (Umbriaticum), Italy |
| Born | Heber MacMahon (McMahon) † | Inniskeen, Co. Monaghan | Bishop of Clogher, Ireland |
| Born | António de Mendonça † | Lamecen | Archbishop of Lisboa {Lisbon}, Portugal |
| Born | Francesco Maria Merlini † | Ferrariae | Bishop of Cervia, Italy |
| Died | Giovanni Myra (Mira) † | Archbishop of Acerenza e Matera, Italy |
| Ordained Bishop | Francisco Ortega, O.S.A. † | Bishop of Nueva Caceres, Philippines |
| 38.0 | Ordained Bishop | Agustín Dávila y Padilla, O.P. † | Archbishop of Santo Domingo, Dominican Republic |
| Born | Scipione Pannocchieschi d’Elci † | Siena | Cardinal, Archbishop Emeritus of Pisa, Italy |
| Died | Pierre Paparin † | Bishop of Gap, France |
| Born | Sallustio Pecólo (Pecoli) † | | Bishop Emeritus of Venosa, Italy |
| Died | Angelo Peruzzi † | Bishop of Sarsina, Italy |
| Born | Alessandro Porro, C.R. † | Milan | Bishop of Bobbio, Italy |
| Died | Matteo Rivarola, O.S.B. † | Archbishop of Genova, Italy |
| Born | Pietro Rota † | Ravennae | Bishop of Lucca, Italy |
| 27.0 | Ordained Priest | David Rothe † | Priest | Bishop of Ossory, Ireland |
| Born | Garcia Ruiz Cabeza † | Majadas | Bishop of Cartagena, Colombia |
| Born | Richard de Sade † | Masano | Bishop of Cavaillon, France |
| Born | Martin Saudrius von Sternfeld † | Dudenwerde | Prefect Emeritus of Meißen (Meissen) {Lusazia o Lausitz; Sassonia}, Germany |
| Born | Bruno Sciamanna † | Interamnen | Bishop of Caserta, Italy |
| Resigned | Bonaventura Secusio, O.F.M. † | Minister General of Order of Friars Minor | Bishop of Catania, Italy |
| Born | Ludovico Serristori † | Firenze | Bishop of Cortona, Italy |
| Born | François Servien † | Gratianapolitan | Bishop of Bayeux, France |
| Born | Flaminio Taja † | Siena, Italy | Cardinal, Cardinal-Priest of Santi Nereo ed Achilleo |
| Died | Flaminio Torricella † | Bishop of Sant’Angelo dei Lombardi e Bisaccia, Italy |
| Born | Giovanni Battista a Tuderlo, O.F.M. † | La Torre | Titular Bishop of Paphus |
| 42.0 | Died | Hector Valladares † | Bishop of Ceuta, Spain |
| 54.0 | Died | Thomas Vásquez del Cano † | Bishop-Elect of Paraguay |
| Born | Antonio Vigo, O. de M. † | Jerez de la Frontera | Auxiliary Bishop of Lima, Peru |
| 7 Jan | | Appointed | Camillo Borghese † | Bishop of Montalcino, Italy | Archbishop of Siena, Italy |
| 10 Jan | 53.3 | Appointed | Sancho Dávila Toledo † | Bishop of Jaén, Spain | Bishop of Plasencia, Spain |
| 48.0 | Appointed | Karel-Filips de Rodoan † | Bishop of Middelburg, Netherlands | Bishop of Brugge {Bruges}, Belgium |
| Appointed | Sallustio Tarugi † | Bishop of Montepulciano, Italy | Archbishop of Pisa, Italy |
| 19 Jan | | Appointed | Tomás de Borja † | Bishop of Málaga, Spain | Archbishop of Zaragoza, Spain |
| Appointed | Placido Fava, O.S.B. † | Bishop of Castro di Puglia, Italy | Bishop of Telese o Cerreto Sannita, Italy |
| 21 Jan | 63.1 | Died | Lorenzo Priuli † | Cardinal, Patriarch of Venezia {Venice}, Italy |
| 43.6 | Died | Jerzy Radziwiłł † | Bishop of Kraków, Poland | Cardinal, Bishop of Vilnius, Lithuania |
| 23 Jan | | Appointed | Juan Zúñiga † | Bishop of Cartagena (en España) |
| 24 Jan | 48.1 | Appointed | Alfonso Visconti, C.O. † | Cardinal-Priest of San Sisto | Cardinal, Bishop of Spoleto, Italy |
| 25 Jan | | Ordained Bishop | Léonard de Trapes, O.F.M. Cap. † | Archbishop of Auch, France |
| 28 Jan | | Born | Giulio Rospigliosi † | Pistoria | Pope (Roma {Rome}, Italy) |
| Appointed | Matteo Zane † | Patriarch of Venezia {Venice}, Italy |
| 31 Jan | | Appointed | Marcellus de Lorenzi † | Bishop of Strongoli, Italy |
| 9 Feb | 54.1 | Died | Stanisław Rozrażewski † | Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 13 Feb | | Ordained Bishop | Marcellus de Lorenzi † | Bishop of Strongoli, Italy |
| 20 Feb | 65.1 | Died | Iñigo Avalos de Aragón, O.S. † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 21 Feb | 64.7 | Appointed | Alessandro Ottaviano de’ Medici † | Cardinal-Priest of Santa Maria in Trastevere | Pope (Roma {Rome}, Italy) |
| 72.4 | Appointed | Tolomeo Gallio † | Cardinal-Bishop of Porto e Santa Rufina | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 68.1 | Appointed | Ludovico Madruzzo † | Cardinal-Bishop of Frascati | Cardinal, Bishop of Trento, Italy |
| 63.1 | Appointed | Girolamo Rusticucci † | Cardinal-Bishop of Sabina | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 78.1 | Appointed | Girolamo Simoncelli † | Cardinal-Bishop of Albano | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 49.8 | Appointed | Simeone Tagliavia d’Aragonia † | Cardinal-Priest of Santa Prassede | Cardinal, Cardinal-Bishop of Sabina |
| 26 Feb | 25.2 | Ordained Priest | Ludovico degli Atti (De Actis) † | Priest | Bishop of Segni, Italy |
| 1 Mar | | Died | Angelo Casarino, O.P. † | Bishop of Caorle, Italy |
| 10 Mar | | Born | Pacifico Trani (Trasi), O.F.M. † | Roma | Bishop of Cagli, Italy |
| 13 Mar | 14.2 | Professed | Mauro Diego (Marcos) de Tovar y Valle Maldonado, O.S.B. † | Member of Order of Saint Benedict | Bishop of Chiapas (Ciudad Real de Chiapas), México |
| 15 Mar | 27.3 | Appointed | Andrea Baroni Peretti Montalto † | Cardinal-Deacon of Sant’Angelo in Pescheria | Cardinal, Cardinal-Bishop of Frascati |
| Appointed | Paolo De Curtis, C.R. † | Bishop of Isernia, Italy |
| Appointed | Andrea Sorbolonghi † | Bishop of Gubbio, Italy |
| 20 Mar | | Appointed | Juan de Castro, O.S.B. † | Archbishop of Taranto, Italy |
| Appointed | Hippolytus Manari, O.S.M. † | Bishop of Montepeloso, Italy |
| 2 Apr | 38.3 | Succeeded | Carlo Gaudenzio Madruzzo † | Cardinal, Bishop of Trento, Italy |
| 3 Apr | | Born | Francesco Boccapaduli † | Roma | Bishop Emeritus of Città di Castello, Italy |
| 9 Apr | | Ordained Bishop | Tomás de Borja † | Bishop of Málaga, Spain | Archbishop of Zaragoza, Spain |
| 15 Apr | | Died | Gilberto Isfar y Corillas † | Bishop of Patti, Italy |
| 17 Apr | 31.9 | Installed | Alessandro d’Este † | Cardinal-Deacon of Sant’Adriano al Foro | Cardinal, Bishop of Reggio Emilia, Italy |
| 20 Apr | 68.3 | Died | Ludovico Madruzzo † | Cardinal, Bishop of Trento, Italy |
| 23 Apr | 80.1 | Appointed | Pedro de Deza Manuel † | Cardinal, Cardinal-Bishop of Albano |
| 63.3 | Appointed | Antonmaria Salviati † | Cardinal-Priest of San Lorenzo in Lucina | Cardinal, Bishop Emeritus of Saint-Papoul, France |
| Ordained Bishop | Andrea Sorbolonghi † | Bishop of Gubbio, Italy |
| 24 Apr | | Died | Antonio Fera, O.F.M. Conv. † | Bishop of Marsico Nuovo, Italy |
| Succeeded | Ascanio Parisi † | Bishop of Marsico Nuovo, Italy |
| 47.8 | Appointed | Flaminio Piatti † | Cardinal, Cardinal-Priest of Santa Maria della Pace |
| 78.3 | Appointed | Girolamo Simoncelli † | Cardinal-Bishop of Frascati | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 30 Apr | 34.3 | Ordained Bishop | Ferenc Forgách de Ghymes † | Bishop of Nitra, Slovakia | Cardinal, Archbishop of Esztergom, Hungary |
| 5 May | 53.3 | Appointed | Matteo de Oviedo, O.F.M. † | Archbishop of Dublin, Ireland |
| 6 May | | Died | Paul Albert † | Bishop-Elect of Wrocław (Breslau), Poland |
| 11 May | | Died | Antônio Barreiros, O. Cist. † | Bishop of São Salvador da Bahia, Brazil |
| Died | Paolo Sanvitale † | Bishop of Spoleto, Italy |
| 12 May | | Appointed | Alessandro Boccabarile † | Bishop of Ortona a Mare e Campli, Italy |
| 42.4 | Appointed | Juan Pérez de Espinosa, O.F.M. † | Bishop of Santiago de Chile | Bishop Emeritus |
| Appointed | Juan Ramírez de Arellano, O.P. † | Bishop of Guatemala (Santiago de Guatemala), Guatemala |
| 13 May | 59.9 | Died | Gaspar Punter † | Bishop of Tortosa, Spain |
| 15 May | | Appointed | Girolamo Contarini, O.P. † | Bishop of Capodistria (Capo d'Istria)(Koper), Slovenia |
| 23 May | 52.4 | Appointed | Bernard Maciejowski † | Bishop of Kraków, Poland | Cardinal, Archbishop of Gniezno, Poland |
| 10 Jun | 53.4 | Died | Domingo de Salinas, O.P. † | Bishop of Coro, Venezuela |
| 12 Jun | | Appointed | Jan Tarnowski † | Bishop of Włocławek (Kujawy, Kalisze), Poland | Archbishop of Gniezno, Poland |
| 18 Jun | 80.2 | Ordained Bishop | Pedro de Deza Manuel † | Bishop of Albano | Cardinal, Cardinal-Bishop |
| 24 Jun | | Born | Bl. Juan de Palafox y Mendoza † | Fitero, Spain | Bishop of Osma, Spain |
| 26 Jun | | Appointed | Claude d’Ormy † | Bishop of Boulogne (-Sur-Mer), France |
| 62.9 | Appointed | Arnaud d’Ossat † | Cardinal, Bishop of Bayeux, France |