| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Appointed | Tomás Aguirre † | Bishop of Guayaquil, Ecuador |
| Ordained Bishop | Angelicus Bedenik, O. Carm. † | Vicar Apostolic of Agra, India |
| 26.8 | Ordained Priest | Antonio María Cascajares y Azara † | Priest | Cardinal, Archbishop of Zaragoza, Spain |
| 67.0 | Resigned | Luigi Clementi † | Apostolic Delegate to Central America | Bishop of Rimini, Italy |
| 67.0 | Resigned | Luigi Clementi † | Apostolic Delegate to México | Bishop of Rimini, Italy |
| 40.3 | Appointed | Martial-Guillaume-Marie Testard du Cosquer † | Apostolic Delegate to Haiti | Archbishop of Port-au-Prince, Haïti |
| 72.3 | Died | Giuseppe Godeassi † | Archbishop of Zadar (Zara), Croatia |
| 22.5 | Ordained Priest | Francesco Maria Imparati, O.F.M. † | Priest of Order of Friars Minor | Archbishop of Acerenza-Matera, Italy |
| Born | Antonio Malecki † | | Auxiliary Bishop of Mohilev, Belarus |
| 81.9 | Died | José de Moura Coutinho † | Bishop of Lamego, Portugal |
| 70.8 | Died | Giovanni Sabatini (Sabatino) † | Bishop of Valva e Sulmona, Italy |
| 77.0 | Died | Gennaro Saladino † | Bishop of Isernia e Venafro, Italy |
| 23.7 | Ordained Priest | Paschal Tosi, S.J. † | Priest of Rimini, Italy | Prelate Emeritus of Alaska, USA |
| 22.6 | Ordained Priest | Michael Verdon † | Priest | Bishop of Dunedin, New Zealand |
| 1 Jan | 52.6 | Died | Miguel José Pratmans Llambés † | Bishop of Tortosa, Spain |
| 2 Jan | | Born | Antoine Coudert, O.M.I. † | Manglieu, France | Archbishop of Colombo, Sri Lanka |
| 4 Jan | 71.6 | Died | John Briggs † | Bishop Emeritus of Beverley, England, Great Britain |
| 5 Jan | 53.7 | Appointed | Manoel Joaquim da Silveira † | Archbishop of São Salvador da Bahia, Brazil |
| 9 Jan | | Born | Bonifatius (Magnus) Fleschutz, O.S.B. † | Reicholzried, Germany | Prefect of Southern Zanguebar {Zanguebar Meridionale}, Tanzania |
| 13 Jan | | Died | Vicente Horcos San Martín, O.S.B. † | Bishop of Osma, Spain |
| Born | Antonio Aurelio Torres y Sanz, O.C.D. † | Avana | Bishop Emeritus of Cienfuegos, Cuba |
| 17 Jan | | Born | Angleo Antonio Fiorini, O.F.M. Cap. † | Campiglia | Bishop of Pontremoli, Italy |
| Born | Natale Serafino † | Genova | Bishop Emeritus of Chiavari, Italy |
| 18 Jan | | Born | Dimitros I (Joseph) Cadi (Kadi) † | Damascus | Patriarch of Antiochia {Antioch} (Melkite), Syria |
| 21 Jan | | Born | Luis Enrique Izquierdo Vargas † | Santiago | Bishop of Concepción, Chile |
| 23 Jan | | Born | Angelo Simonetti † | Cornacchiaia | Bishop of Pescia, Italy |
| 25 Jan | 39.1 | Ordained Bishop | Thomas Grimley † | Titular Bishop of Antigonea | Vicar Apostolic of Cape of Good Hope, Western District {Capo di Buona Speranza, Distretto Occidentale}, South Africa |
| 26 Jan | | Born | Uberto Maria Fiodo † | Napoli | Bishop Emeritus of Castellammare di Stabia, Italy |
| 30 Jan | 43.2 | Appointed | Charles-Théodore Baudry † | Bishop of Périgueux (-Sarlat), France |
| 62.5 | Died | Louis-Antoine de Salinis † | Archbishop of Auch, France |
| 31 Jan | 54.1 | Died | Franciscus Jacobus van Vree † | Bishop of Haarlem, Netherlands |
| 2 Feb | 44.1 | Ordained Bishop | Gregorio Balitian † | Bishop of Alep (Armenian), Syria |
| 3 Feb | 45.6 | Ordained Bishop | Eugene O’Connell † | Titular Bishop of Flaviopolis | Bishop Emeritus of Grass Valley, California, USA |
| 4 Feb | | Born | Thomas Francis Hickey † | Rochester | Bishop Emeritus of Rochester, New York, USA |
| 10 Feb | 59.2 | Died | Gabriel della Genga Sermattei † | Cardinal, Prefect of the Roman Curia - Other |
| 13 Feb | | Born | Miguel Claro Vásquez † | Santiago | Auxiliary Bishop of Santiago de Chile |
| 15 Feb | 61.0 | Appointed | Jean Marie (John Mary) Odin, C.M. † | Archbishop of New Orleans, Louisiana, USA |
| 16 Feb | 69.4 | Died | Antônio Joaquim de Mello † | Bishop of São Paulo, Brazil |
| 19 Feb | | Born | Heinrich Hähling von Lanzenauer † | Koblenz | Auxiliary Bishop of Paderborn, Germany |
| 20 Feb | 60.4 | Appointed | François-Augustin Delamare † | Archbishop of Auch, France |
| Born | Felipe Rincón González † | Chiquinquira | Archbishop of Caracas, Santiago de Venezuela |
| 21 Feb | 65.7 | Died | Giovanni Brunelli † | Archbishop (Personal Title) of Osimo e Cingoli, Italy | Cardinal, Bishop |
| 3 Mar | | Born | Thomas Francis Lillis † | Lexington, MO | Bishop of Kansas City, Missouri, USA |
| 4 Mar | | Born | Silviano Carrillo y Cardenas † | Pátzcuaro | Bishop of Sinaloa, Sinaloa, México |
| 81.1 | Retired | Gaspare Bernardo Pianetti † | Bishop of Viterbo e Tuscania, Italy | Cardinal, Bishop Emeritus |
| 8 Mar | 29.6 | Ordained Bishop | Cirillo Benham Benni † | Archbishop of Mossul (Syrian), Iraq |
| 9 Mar | 75.7 | Installed | Nicolás Aldazor, O.F.M. † | Bishop of San Juan de Cuyo, Argentina |
| 18 Mar | 43.4 | Confirmed | Charles-Théodore Baudry † | Bishop of Périgueux (-Sarlat), France |
| 54.8 | Appointed | Gaetano Bedini † | Archbishop (Personal Title) of Viterbo e Tuscania, Italy | Cardinal, Bishop |
| 57.9 | Confirmed | Jean-Joseph Christophe † | Bishop of Soissons (-Laon), France |
| 60.5 | Confirmed | François-Augustin Delamare † | Archbishop of Auch, France |
| 45.0 | Confirmed | Théodore-Augustin Forcade, M.E.P. † | Bishop of Nevers, France | Archbishop of Aix (-Arles-Embrun), France |
| 58.3 | Confirmed | Charles-Marie Magnin † | Bishop of Annecy, France |
| 60.0 | Confirmed | Emmanuel-Jules Ravinet † | Bishop of Troyes, France | Bishop Emeritus |
| 48.6 | Appointed | Antonio da Trindade de Vasconcellos Pereira de Melo † | Bishop of Beja, Portugal | Bishop of Lamego, Portugal |
| 54.0 | Appointed | Adrian Wlodarski † | Auxiliary Bishop of Wrocław, Poland |
| 54.0 | Appointed | Adrian Wlodarski † | Titular Bishop of Ibora | Auxiliary Bishop of Wrocław, Poland |
| 19 Mar | | Born | Joseph MacRory † | Armagh | Cardinal, Archbishop of Armagh, Ireland |
| 21 Mar | 64.8 | Died | Clément Bonnand, M.E.P. † | Vicar Apostolic of Pondicherry, India |
| 55.0 | Succeeded | Joseph-Isidore Godelle, M.E.P. † | Vicar Apostolic of Pondicherry, India |
| Born | Eduardo Solar Vicuña † | La Serena | Auxiliary Bishop of La Serena, Chile |
| 22 Mar | 50.4 | Appointed | João Crisóstomo de Amorim Pessoa, O.F.M. † | Archbishop of Goa, India | Archbishop Emeritus of Braga, Portugal |
| Born | Charles Joseph Heitz † | Mulhouse, France | Prefect Emeritus of Iles Saint-Pierre et Miquelon |
| 54.0 | Appointed | Benedetto Riccabona de Reinchenfels † | Bishop of Trento, Italy |
| 23 Mar | | Born | Francis Alphonsus Bourne † | Clapham | Cardinal, Archbishop of Westminster, England, Great Britain |
| 24 Mar | 24.5 | Ordained Priest | Remigio Guido Barbieri, O.S.B. † | Priest of Order of Saint Benedict | Vicar Apostolic of Gibraltar, Gibraltar |
| 78.0 | Died | Pedro José Zarandia Endara † | Bishop of Huesca, Spain |
| 30 Mar | | Born | Manuel Vieira de Matos † | Peso da Regoa | Archbishop of Braga, Portugal |
| 6 Apr | 34.3 | Appointed | Charles-Amable de la Tour d'Auvergne Lauraguais † | Coadjutor Archbishop of Bourges, France | Archbishop |
| 7 Apr | 38.8 | Ordained Bishop | Leone Korkoruni † | Archbishop (Personal Title) of Melitene degli Armeni | Bishop |
| 49.5 | Ordained Bishop | Buenaventura Rizo Patrón, O.F.M. † | Bishop of Salta, Argentina |
| 12 Apr | | Born | Daniel Mary Gorman † | Wyoming, IA | Bishop of Boise City, Idaho, USA |
| 14 Apr | 44.1 | Ordained Bishop | Luiz Antônio dos Santos † | Bishop of Ceará, Brazil | Archbishop Emeritus of São Salvador da Bahia, Brazil |
| 18 Apr | 60.2 | Died | José Aranguren, O.R.S.A. † | Archbishop of Manila, Philippines |
| 21 Apr | 24.3 | Ordained Priest | Abraham Brownrigg, S.S.S. † | Priest of Congregation of the Blessed Sacrament | Bishop of Ossory, Ireland |
| 30.7 | Ordained Bishop | Antônio de Macedo Costa † | Bishop of Belém do Pará, Brazil | Archbishop of São Salvador da Bahia, Brazil |
| 26 Apr | | Born | Anatol Novak (Nowak) † | Kanczuga | Bishop of Przemyśl, Poland |
| 28 Apr | 60.4 | Appointed | Gerardus Petrus Wilmer † | Bishop of Haarlem, Netherlands |
| 30 Apr | | Born | Pasquale Ragosta † | Napoli | Bishop Emeritus of Castellammare di Stabia, Italy |
| 1 May | | Died | Patrick McGettigan † | Bishop of Raphoe, Ireland |
| 45.5 | Succeeded | Daniel McGettigan † | Bishop of Raphoe, Ireland | Archbishop of Armagh, Ireland |
| 60.1 | Ordained Bishop | Emmanuel-Jules Ravinet † | Bishop of Troyes, France | Bishop Emeritus |
| 4 May | 65.2 | Died | Charles-Thomas Thibault † | Bishop of Montpellier, France |
| 5 May | 43.5 | Ordained Bishop | Charles-Théodore Baudry † | Bishop of Périgueux (-Sarlat), France |
| 58.1 | Ordained Bishop | Jean-Joseph Christophe † | Bishop of Soissons (-Laon), France |
| 6 May | 74.3 | Died | Jacques-Léonard Pérocheau, M.E.P. † | Vicar Apostolic of Northwestern Szechwan {Se-Ciuen Settentrionale-Occidentale}, China |
| 47.3 | Succeeded | Annet-Théophile Pinchon, M.E.P. † | Vicar Apostolic of Northwestern Szechwan {Se-Ciuen Settentrionale-Occidentale}, China |
| 11 May | 59.1 | Appointed | Sebastião Pinto do Rêgo † | Bishop of São Paulo, Brazil |
| 12 May | | Born | Pasquale Berardi † | Duronia | Archbishop Emeritus of Gaeta, Italy |
| 42.1 | Installed | James Quinn † | Bishop of Brisbane, Australia |
| 14 May | 43.5 | Installed | Charles-Théodore Baudry † | Bishop of Périgueux (-Sarlat), France |
| 18 May | | Born | Thomas P. Gilmartin † | Cashlebar | Archbishop of Tuam, Ireland |
| 19 May | 73.7 | Died | Cipriano Juárez Berzosa † | Bishop of Calahorra y La Calzada, Spain |
| 20 May | 78.8 | Died | St. Eugène-Charles-Joseph de Mazenod, O.M.I. † | Bishop of Marseille, France |
| 21 May | 61.7 | Resigned | Jacques Jeancard, O.M.I. † | Auxiliary Bishop of Marseille, France | Auxiliary Bishop Emeritus |
| 22 May | 62.4 | Died | Godehard Braun † | Auxiliary Bishop of Trier, Germany |
| 23 May | 33.8 | Ordained Priest | Jean-Baptiste Cazet, S.J. † | Priest of Society of Jesus | Vicar Apostolic Emeritus of Central Madagascar {Madagascar Centrale}, Madagascar |
| 25 May | 23.2 | Ordained Priest | Giulio Boschi † | Priest of Perugia, Italy | Cardinal, Archbishop Emeritus of Ferrara, Italy |
| 24.5 | Ordained Priest | Jules Lepley, M.E.P. † | Priest of La Société des Missions Etrangères | Vicar Apostolic Emeritus of Southern Szechwan {Se-Ciuen Meridionale}, China |
| 23.7 | Ordained Priest | Franz Konstantin Rampa † | Priest of Como, Italy | Bishop of Chur, Switzerland |
| 25.5 | Ordained Priest | Henri-Victor Valleau † | Priest of La Rochelle (-Saintes), France | Bishop of Quimper [Cornouailles](-Léon), France |
| 28 May | 30.8 | Installed | Antônio de Macedo Costa † | Bishop of Belém do Pará, Brazil | Archbishop of São Salvador da Bahia, Brazil |
| 2 Jun | 54.3 | Ordained Bishop | Adrian Wlodarski † | Titular Bishop of Ibora | Auxiliary Bishop of Wrocław, Poland |
| 5 Jun | 55.1 | Appointed | Charles-Théodore Colet † | Bishop of Luçon, France | Archbishop of Tours, France |
| Born | Valentín Comellas y Santamaría † | Caserras | Bishop of Solsona, Spain |
| 53.4 | Appointed | Louis-Anne Dubreil † | Bishop of Vannes, France | Archbishop of Avignon (-Apt, Cavaillon, Carpentras, Orange, e Vaison), France |
| 61.5 | Appointed | François-Marie-Joseph Lecourtier † | Bishop of Montpellier, France | Archbishop Emeritus of Montpellier (, Lodève, Béziers, Agde, e Saint-Pons-de-Thomières), France |
| 6 Jun | 81.9 | Died | Nicolas-Augustin de la Croix d'Azolette † | Archbishop Emeritus of Auch, France |
| 7 Jun | | Born | Giuseppe Fabbrucci † | Cancelli | Bishop of Fidenza, Italy |
| Born | Antonio Laubitz † | Pakosc | Auxiliary Bishop of Gniezno-Poznań, Poland |
| 8 Jun | | Born | Louis-Auguste Dartois, S.M.A. † | Wez-Macquart, France | Vicar Apostolic of Dahomey, Benin |
| 11 Jun | 58.6 | Ordained Bishop | Charles-Marie Magnin † | Bishop of Annecy, France |
| 13 Jun | 46.3 | Appointed | George Butler † | Coadjutor Bishop of Limerick, Ireland | Bishop |
| 46.3 | Appointed | George Butler † | Titular Bishop of Sidon | Bishop of Limerick, Ireland |
| 81.3 | Died | Francesco di Paola Villadecani † | Cardinal, Archbishop of Messina, Italy |
| 15 Jun | 48.4 | Died | Alexander Smith † | Coadjutor Vicar Apostolic of Western District, Scotland, Great Britain |
| 16 Jun | | Born | Frediano Giannini, O.F.M. † | Bozzano, Italy | Vicar Apostolic Emeritus of Alep, Syria |
| 23.4 | Ordained Priest | José María de Jesús Portugal y Serratos, O.F.M. † | Priest of Order of Friars Minor | Bishop of Aguascalientes, Aguascalientes, México |
| 17 Jun | | Appointed | Marriano Chaco y Becerra † | Bishop of Puno, Peru | Bishop Emeritus |
| 18 Jun | 55.6 | Appointed | Mariano Benito Barrio Fernández † | Cardinal, Archbishop of Valencia, Spain |
| 45.9 | Appointed | Patrice-François-Marie Cruice † | Bishop of Marseille, France | Bishop Emeritus |
| 21 Jun | | Born | Alexandre Caillot † | Doyet | Bishop of Grenoble, France |
| 22 Jun | 49.8 | Appointed | Antolín Monescillo y Viso † | Bishop of Calahorra y La Calzada, Spain | Cardinal, Archbishop of Toledo, Spain |
| 23 Jun | 23.3 | Ordained Priest | Prosper-Amable Berthet † | Priest of Gap, France | Bishop |
| 24 Jun | | Born | Fulgentius Antonio Torres, O.S.B. † | Ibiza, Spain | Abbot of New Norcia, Australia |
| 26 Jun | 54.3 | Installed | Benedetto Riccabona de Reinchenfels † | Bishop of Trento, Italy |
| 28 Jun | | Born | Wladislao Krynicki † | Wladislavia | Bishop of Włocławek, Poland |
| 35.5 | Appointed | Francisco de la Concepción Ramírez y González, O.F.M. † | Vicar Apostolic of Tamaulipas, México |
| 35.5 | Appointed | Francisco de la Concepción Ramírez y González, O.F.M. † | Titular Bishop of Charadrus | Vicar Apostolic of Tamaulipas, México |
| 29 Jun | | Born | Nicola Cadi † | Damasco | Archbishop of Bosra e Hauran (Melkite), Syria |
| 23.1 | Ordained Priest | Edward Illsley † | Priest | Archbishop Emeritus of Birmingham, England, Great Britain |
| 51.0 | Ordained Bishop | Walter Herman Jacobus Steins, S.J. † | Titular Bishop of Nilopolis | Bishop of Auckland, New Zealand |
| 30 Jun | 26.9 | Ordained Priest | James Gibbons † | Priest of Baltimore, Maryland, USA | Cardinal, Archbishop |
| 50.4 | Died | Manuel María Negueruela Mendi † | Archbishop of Santiago de Cuba |