| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Appointed | Giovanni B. Baratta † | Bishop of Novara, Italy |
| Appointed | Serafino Brancone (Branconi) † | Bishop of Gallipoli, Italy |
| Died | Sostegno Maria Cavalli, O.S.M. † | Bishop of Gubbio, Italy |
| Died | Arcangelo Maria Ciccarelli, O.P. † | Bishop of Ugento, Italy |
| 26.0 | Ordained Priest | Claude-Marc-Antoine d'Apchon de Corgenon † | Priest | Archbishop of Auch, France |
| 37.0 | Died | Ludovico Das Chagas, O.S.A. † | Bishop of São Tomé e Príncipe |
| 23.0 | Ordained Priest | Luis Tomás Esteban de Piña y Mazo, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Yucatán (Mérida), Yucatán, México |
| Appointed | Filippo Gentile † | Bishop of Telese o Cerreto Sannita, Italy |
| Born | José Antonio de la Huerta Caso † | | Bishop of León en Nicaragua |
| 67.0 | Died | Alexandre de Jouanne de Saumery † | Bishop of Rieux, France |
| Died | Conone Luchini dal Verme † | Bishop of Ostuni, Italy |
| Appointed | Giovanni Battista Minucci, O.F.M. Conv. † | Bishop of Policastro, Italy |
| 46.0 | Appointed | John O’Brien † | Bishop of Ross, Ireland |
| Died | Andrea de Robertis † | Bishop of Policastro, Italy |
| Died | Domenico Rosso e Colonna † | Archbishop of Palermo, Italy |
| 73.0 | Died | Agostino Saluzzo, C.M. † | Bishop of Acci and Mariana, France |
| 50.0 | Ordained Bishop | Pedro Anselmo Sánchez de Tagle † | Bishop of Durango, México | Bishop of Michoacán, Michoacán, México |
| Appointed | Dominico Maria Saporito † | Bishop of Acci and Mariana, France |
| Jan | 64.2 | Died | Plácido Bailés Padilla, O.S.A. † | Bishop of Plasencia, Spain |
| 1 Jan | | Born | Manoel de Almeida de Carvalho † | Vizeu, Portugal | Bishop of Belém do Pará, Brazil |
| 3 Jan | | Born | Pietro Arborio di Gattinara † | Albano Vercellese | Bishop of Asti, Italy |
| 12 Jan | 56.8 | Died | Antonio Maria Pescatori, O.F.M. Cap. † | Bishop of Gallipoli, Italy |
| 15 Jan | | Born | Maria José a Santo Tomas, O.P. † | Ponte da Barca, Portugal | Prelate of Mozambico, Mozambique |
| 16 Jan | 79.8 | Died | Carlo Maria Marini † | Cardinal, Cardinal-Deacon of S. Maria in Via Lata |
| 18 Jan | | Born | Michele Di Pietro † | Albano | Cardinal, Official of the Roman Curia - Other |
| 22 Jan | 42.1 | Ordained Bishop | Charles de Grimaldi d'Antibes † | Bishop of Rodez, France |
| Born | Jean-Baptiste Marie Scipion Ruffo (Roux) de Bonneval † | Aix | Bishop Emeritus of Senez, France |
| 25 Jan | 64.4 | Died | Juan Antonio de Vizarrón y Eguiarreta † | Archbishop of México, Federal District |
| Feb | | Died | Thomas O’Beirne † | Bishop of Ardagh (and Clonmacnois), Ireland |
| 7 Feb | 78.1 | Appointed | Jean d'Yse (d'Ize) de Saléon † | Archbishop of Vienne, France |
| 24 Feb | | Born | Maciej Pawel Mozdzeniewski † | Jordanowicz, Poland | Auxiliary Bishop of Mohilev, Belarus |
| 25 Feb | | Born | Giovanni Filippo Gallarati Scotti † | Milan, Italy | Cardinal, Prefect Emeritus of the Prefecture of the Papal Household |
| 11 Mar | | Born | Francisco Javier Almonacid † | Talayuelas | Bishop of Palencia, Spain |
| 14 Mar | | Died | Domenico Nicola Condulmer † | Bishop of Belluno, Italy | Bishop of Hvar (Lesina), Croatia |
| 18 Mar | 24.1 | Ordained Priest | Francesco Ferdinando Sanseverino † | Priest | Archbishop of Palermo, Italy |
| 20 Mar | 51.2 | Died | Troiano Acquaviva d’Aragona † | Cardinal, Archbishop of Monreale, Italy |
| 21 Mar | 74.5 | Died | Giuseppe Accoramboni † | Cardinal, Bishop of Frascati, Italy |
| 84.3 | Died | Vincenzo Petra † | Cardinal, Cardinal-Bishop of Palestrina |
| 27 Mar | 57.1 | Appointed | Silvio Valenti Gonzaga † | Prefect of the Congregation for Propagation of the Faith | Cardinal, Secretary of the Secretariat of State |
| 30 Mar | | Born | Carlo Andrea Pelagallo † | Rome | Cardinal, Bishop of Osimo e Cingoli, Italy |
| 1 Apr | 90.0 | Retired | José Espejo Cisneros † | Bishop of Calahorra y La Calzada, Spain | Bishop Emeritus |
| 63.3 | Died | Pedro Morcillo Rubio de Suñón † | Bishop of Cuzco, Peru |
| 10 Apr | 54.5 | Appointed | Alessandro Albani † | Cardinal-Deacon of S. Maria in Via Lata | Cardinal, Archivist of the Vatican Secret Archives |
| 27.1 | Appointed | Giovanni Francesco Albani † | Cardinal-Deacon of S. Cesareo in Palatio | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 27.1 | Elevated to Cardinal | Giovanni Francesco Albani † | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 79.2 | Appointed | Vincenzo Bichi † | Cardinal, Cardinal-Bishop of Frascati |
| 77.1 | Appointed | Raniero d'Elci † | Cardinal-Bishop of Sabina | Cardinal, Cardinal-Bishop of Ostia (-Velletri) |
| 61.2 | Elevated to Cardinal | Daniele Delfino † | Cardinal, Archbishop of Udine, Italy |
| 66.0 | Appointed | Joaquín Fernández de Portocarrero Mendoza † | Cardinal-Priest of S. Cecilia | Cardinal, Cardinal-Bishop of Sabina |
| 66.2 | Appointed | Antonio Saverio Gentili † | Cardinal-Bishop of Palestrina | Cardinal, Prefect of the Congregation of the Council |
| 34.6 | Elevated to Cardinal | Carlo Vittorio Amedeo delle Lanze † | Cardinal, Prefect of the Congregation of the Council |
| 45.7 | Appointed | Frédéric-Jérôme de La Rochefoucauld † | Cardinal-Priest of S. Agnese fuori le mura | Cardinal, Archbishop of Bourges, France |
| 45.7 | Elevated to Cardinal | Frédéric-Jérôme de La Rochefoucauld † | Cardinal, Archbishop of Bourges, France |
| 44.9 | Confirmed | Wojciech Stanisław Leski, O. Cist. † | Bishop of Chelmno (Culma), Poland |
| 60.3 | Elevated to Cardinal | José Manuel da Cámara d'Atalaia † | Cardinal, Patriarch of Lisboa, Portugal |
| 44.4 | Appointed | Tommaso Mazza † | Bishop of Ugento, Italy | Bishop of Castellammare di Stabia, Italy |
| 75.4 | Elevated to Cardinal | Álvaro Eugenio de Mendoza Caamaño y Sotomayor † | Cardinal, Patriarch of West Indies, Spain |
| 76.0 | Elevated to Cardinal | Giovanni Battista Mesmer † | Cardinal, Cardinal-Priest of S. Onofrio |
| 70.2 | Elevated to Cardinal | Mario Millini (Mellini) † | Cardinal, Cardinal-Priest of S. Marcello |
| 72.0 | Appointed | Filippo Maria de Monti † | Cardinal, Cardinal-Priest of S. Stefano al Monte Celio |
| 29.4 | Elevated to Cardinal | François-Armand-Auguste de Rohan-Soubise-Ventadour † | Cardinal, Bishop of Strasbourg, France |
| 57.6 | Appointed | Carlo Maria Sacripante † | Cardinal-Deacon of S. Maria ad Martyres | Cardinal, Cardinal-Bishop of Frascati |
| 50.3 | Appointed | Pedro Anselmo Sánchez de Tagle † | Bishop of Durango, México | Bishop of Michoacán, Michoacán, México |
| 71.3 | Elevated to Cardinal | Raniero Felice Simonetti † | Cardinal, Bishop of Viterbo e Tuscania, Italy |
| 49.2 | Elevated to Cardinal | Ferdinand Julius Graf von Troyer † | Cardinal, Bishop of Olomouc, Czech Republic |
| 12 Apr | | Born | Francisco de Cuerda † | Mora, Spain | Bishop Emeritus of Puerto Rico (Porto Rico) |
| 15 Apr | 83.0 | Died | Armand-Pierre de la Croix de Castries † | Archbishop of Albi, France |
| Born | Lodovico Lodovici da Ebulo, O.F.M. † | Ebulo | Bishop of Crotone (Cotrone), Italy |
| 23 Apr | 75.5 | Died | Henri-Osvald de La Tour d'Auvergne de Bouillon † | Cardinal, Archbishop Emeritus of Vienne, France |
| 24 Apr | | Born | José Carrión y Marfil † | Estepona, Spain | Bishop Emeritus of Trujillo, Peru |
| 27 Apr | | Died | Giovanni Crisostomo Calvi † | Bishop of Monte Feltre, Italy |
| 1 May | 34.6 | Appointed | Dominique de La Rochefoucauld † | Archbishop of Albi, France | Cardinal, Archbishop of Rouen, France |
| 3 May | 37.3 | Appointed | Henri-Jacques de Montesquiou-Poylobon † | Bishop of Sarlat, France |
| 6 May | 69.0 | Died | Juan García Abadiano † | Bishop of Caracas, Santiago de Venezuela |
| 8 May | | Appointed | Thomas MacDermot † | Bishop of Ardagh (and Clonmacnois), Ireland |
| 10 May | | Born | José Antonio Garnica, O.F.M. Cap. † | Barcena de Cicero | Bishop of Osma, Spain |
| Died | Ettore Quarti (del Quarto) † | Bishop of Caserta, Italy |
| 12 May | 65.1 | Resigned | Jorge Casado Torreblanca † | Bishop of Urgell, Spain | Bishop Emeritus |
| 15 May | 57.4 | Appointed | Mario Bolognetti † | Cardinal-Deacon of S. Nicola in Carcere | Cardinal, Cardinal-Deacon of S. Maria ad Martyres |
| 53.8 | Appointed | Nicola Brescia † | Bishop of San Marco, Italy |
| 64.3 | Appointed | Sebastián José Victoria Emparán y Loyola, O.S.H. † | Bishop of Urgell, Spain |
| 76.1 | Installed | Giovanni Battista Mesmer † | Cardinal-Priest of Ss. Quattro Coronati | Cardinal, Cardinal-Priest of S. Onofrio |
| 70.3 | Installed | Mario Millini (Mellini) † | Cardinal-Priest of S. Prisca | Cardinal, Cardinal-Priest of S. Marcello |
| 54.2 | Appointed | Carlo della Torre Rezzonico † | Cardinal-Priest of S. Maria in Ara Coeli | Pope (Roma {Rome}, Italy) |
| 34.0 | Appointed | Francesco Antonio Scoppa † | Bishop of Ostuni, Italy |
| 71.4 | Installed | Raniero Felice Simonetti † | Cardinal-Priest of S. Susanna | Cardinal, Bishop of Viterbo e Tuscania, Italy |
| 57.2 | Appointed | Silvio Valenti Gonzaga † | Cardinal-Priest of S. Callisto | Cardinal, Secretary of the Secretariat of State |
| 22 May | | Born | Gioacchino Maria Mancusi (Mancuso) † | Napoli | Archbishop of Conza, Italy |
| 23 May | 53.8 | Ordained Bishop | Nicola Brescia † | Bishop of San Marco, Italy |
| 25 May | | Born | Joaquín Javier Uriz Lasaga † | Sada de Sangüesa | Bishop of Pamplona, Spain |
| 26 May | 66.7 | Died | St. Pedro Sanz, O.P. † | Vicar Apostolic of Fo-Kien, China |
| 51.5 | Succeeded | Bl. Francisco Serrano Frías, O.P. † | Vicar Apostolic of Fo-Kien, China |
| 27 May | 67.4 | Died | Bernard MacMahon (McMahon) † | Archbishop of Armagh, Ireland |
| 29 May | 43.2 | Appointed | Sebastiano Bonaiuti † | Bishop of Monte Feltre, Italy |
| 51.4 | Appointed | Alessandro Cervini † | Archbishop of Siena, Italy |
| 47.7 | Appointed | Giacomo Costa, C.R. † | Bishop of Belluno, Italy |
| 47.4 | Appointed | Antonio Falangola † | Bishop of Caserta, Italy |
| 34.7 | Confirmed | Dominique de La Rochefoucauld † | Archbishop of Albi, France | Cardinal, Archbishop of Rouen, France |
| 59.6 | Appointed | Luca Niccolò Recco † | Bishop of Ripatransone, Italy |
| 12 Jun | | Born | Angelo Antonio Anselmi † | Viterbo | Bishop of San Severino, Italy |
| 57.4 | Died | Jakob Ernst Graf von Liechtenstein-Kastelkorn † | Archbishop of Salzburg, Austria |
| 14 Jun | | Born | Joaquín Carrillo Mayoral † | Palencia | Bishop of Zamora, Spain |
| Born | Viktor Franz Anton von Glutz-Ruchti † | Solothurn | Auxiliary Bishop of Basel, Switzerland |
| 24 Jun | | Born | Pablo Sitjar Ruata † | Estana | Bishop of Barcelona, Spain |
| 25 Jun | 64.4 | Ordained Bishop | Sebastián José Victoria Emparán y Loyola, O.S.H. † | Bishop of Urgell, Spain |
| 52.2 | Ordained Bishop | Johann Philipp Anton Reichsfreiherr von Franckenstein † | Bishop of Bamberg, Germany |
| 29 Jun | 34.8 | Ordained Bishop | Dominique de La Rochefoucauld † | Archbishop of Albi, France | Cardinal, Archbishop of Rouen, France |