| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Orazio Bettacchini, C.O. † | Piosina, Italy | Vicar Apostolic of Colombo, Sri Lanka |
| 21.6 | Ordained Priest | Buenaventura Codina Augerolas, C.M. † | Priest of Congregation of the Mission | Bishop of Islas Canarias {Canary Islands}, Spain |
| 22.9 | Ordained Priest | Manuel Grijalvo y Mínguez, O.S.A. † | Priest of Order of St. Augustine | Bishop of Nueva Caceres, Philippines |
| 33.0 | Appointed | Ignatius Petrus Jarweh (Jaroue) † | Bishop of Jerusalem {Gerusalemme} (Syrian), Palestine | Patriarch of Antiochia {Antioch} (Syrian), Lebanon |
| 32.3 | Ordained Priest | Hector Joubert, P.S.S. † | Priest of Society of Priests of St. Sulpice | Titular Bishop of Elusa |
| Appointed | Hryhorij (Grzegorz) Koxanovyc (Kochanowicz) † | Archbishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine |
| 78.0 | Selected | José Antonio Martínez de Aldunate † | Archbishop of Santiago de Chile | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| 49.0 | Died | Florence MacCarthy † | Coadjutor Bishop of Cork, Ireland |
| Appointed | Clément Moutran † | Bishop of Baalbek (Melkite Greek), Lebanon |
| Ordained Bishop | Clément Moutran † | Bishop of Baalbek (Melkite Greek), Lebanon |
| 24.0 | Ordained Priest | Daniel O’Connor, O.S.A. † | Priest of Order of St. Augustine | Vicar Apostolic Emeritus of Madras, India |
| 64.3 | Died | Luis Rodrigues Vilares † | Bishop of Funchal, Portugal |
| Born | Bonifacio Antonio Toscano † | Nueva Pamplona | Bishop Emeritus of Nueva Pamplona, Colombia |
| Appointed | Ignace Siméon Zora † | Bishop of Damas (Syrian), Syria | Patriarch Emeritus of Antiochia {Antioch} (Syrian), Lebanon |
| 2 Jan | | Born | Venceslao Javier José Achával y Medina, O.F.M. † | Santiago del Estero | Bishop of San Juan de Cuyo, Argentina |
| 3 Jan | | Born | Nicola Pace † | Tolentino | Bishop Emeritus of Amelia, Italy |
| 4 Jan | 77.5 | Died | Klemens August Maria von Merle † | Auxiliary Bishop of Köln {Cologne}, Germany |
| 6 Jan | | Born | Pierre Maria Bataillon, S.M. † | Saint-Cyr-les-Vignes, France | Vicar Apostolic Emeritus of Central Oceania, Tonga |
| 83.7 | Died | Bonifacio Da Ponte, O.S.B. † | Bishop of Capodistria (Capo d’Istria)(Koper), Slovenia |
| 10 Jan | 62.7 | Died | José Antonio Garnica, O.F.M. Cap. † | Bishop of Osma, Spain |
| 12 Jan | | Born | Franciscus Xaverius Giannuzzi Savelli † | Cusentin | Bishop of Gravina e Irsina, Italy |
| 19 Jan | 55.0 | Died | Paolo Bartoli † | Bishop of Città di Castello, Italy |
| 20 Jan | | Born | Luigi Filippi, O.F.M. † | Avigliano | Archbishop of L’Aquila, Italy |
| 24 Jan | | Born | Timothy Clement Smyth, O.C.S.O. † | Finlea, Ireland | Bishop of Dubuque, Iowa, USA |
| 27 Jan | 66.5 | Died | Marcello Maria Benci † | Bishop of Colle di Val d’Elsa, Italy |
| 70.0 | Died | Scipione de’ Ricci † | Bishop Emeritus of Pistoia e Prato, Italy |
| 1 Feb | | Born | Raffaele d’Ambrosio, O.F.M. † | Boscoreale | Archbishop Emeritus of Durrës (Durazzo), Albania |
| 2 Feb | | Born | Francesco Gallo † | Torre Annunziata | Bishop of Avellino, Italy |
| 3 Feb | 43.3 | Selected | Giovanni Sergio † | Bishop of Cefalù, Italy |
| 7 Feb | 79.2 | Died | Reginaldo Coppola, O.P. † | Bishop of San Marco (Argentano), Italy |
| 12 Feb | 62.7 | Died | Joaquín Carrillo Mayoral † | Bishop of Zamora, Spain |
| 14 Feb | 25.1 | Ordained Priest | Joannes Derderian † | Priest | Bishop of Ispahan {Esfáan) (Armenian), Iran |
| 15 Feb | | Born | Carmine Gori-Merosi † | Subiaco | Cardinal, Secretary of the Sacred Consistorial Congregation |
| 21 Feb | 88.1 | Died | Claude-François-Ignace Franchet de Rans † | Auxiliary Bishop of Besançon, France |
| 24 Feb | 49.6 | Ordained Bishop | Rafael Andreu Guerrero † | Titular Bishop of Epiphania in Cilicia | Auxiliary Bishop of La Plata o Charcas, Bolivia |
| 1 Mar | | Born | François-Alexandre Roullet de la Bouillerie † | Paris | Coadjutor Archbishop of Bordeaux, France |
| 2 Mar | | Born | Vincenzo Gioacchino Raffaele Luigi Pecci † | Carpineto | Pope (Roma {Rome}, Italy) |
| 9 Mar | | Born | Corradino Cavriani † | Mantova | Bishop Emeritus of Ceneda, Italy |
| 10 Mar | | Born | Giacomo Giuseppe Jans † | Liliane | Bishop of Aosta, Italy |
| Born | John McCloskey † | Brooklyn | Cardinal, Archbishop of New York, New York, USA |
| 47.0 | Ordained Bishop | Thomas Smith † | Titular Bishop of Bolina | Vicar Apostolic of Northern District, England, Great Britain |
| 17 Mar | 24.2 | Ordained Priest | Luigi Gagliardi † | Priest | Bishop Emeritus of Ischia, Italy |
| 24.1 | Ordained Priest | Vitangelo Salvemini † | Priest | Archbishop of Manfredonia (e Vieste), Italy |
| 29 Mar | | Born | Francesco Marie Alli Maccarani † | San Miniato | Bishop of San Miniato, Italy |
| 69.4 | Died | Ferenc Szanyi † | Bishop of Rožňava, Slovakia |
| 1 Apr | 53.2 | Ordained Bishop | Nicolás García Jerez, O.P. † | Bishop of Nicaragua |
| 6 Apr | | Born | Alessandro Csajàghy † | Bács | Bishop of Csanád, Hungary |
| 7 Apr | 23.8 | Ordained Priest | Peter Augustine Baines, O.S.B. † | Priest of Order of Saint Benedict | Vicar Apostolic of Western District, England, Great Britain |
| 24.5 | Ordained Priest | Daniel McDonnell † | Priest | Vicar Apostolic of Trinidad, Trinidad and Tobago, Antilles |
| 23.4 | Ordained Priest | Paolo Miossich † | Priest | Bishop of Split-Makarska (Spalato-Macarska), Croatia |
| 24.0 | Ordained Priest | Jean-François-Marcellin Turinaz † | Priest | Bishop Emeritus of Tarentaise, France |
| 8 Apr | | Born | Mihály Haas † | Pinkafeld | Bishop of Satu Mare {Szatmár}, Romania |
| 51.2 | Installed | Diego Antonio Navarro Martín de Villodras † | Bishop of Concepción, Chile | Archbishop of La Plata o Charcas, Bolivia |
| 11 Apr | | Born | Johann Baptist Rudolph Kutschker † | Wiese | Cardinal, Archbishop of Wien {Vienna}, Austria |
| 14 Apr | | Born | Johannes Baptist Swinkels, C.SS.R. † | Woensel, Netherlands | Vicar Apostolic of Dutch Guyana-Suriname, Suriname, Antilles |
| 20 Apr | | Born | Pierre-Henri Gérault de Langalerie † | Sainte-Foy-la-Grande | Archbishop of Auch, France |
| 21 Apr | 23.4 | Ordained Deacon | Augustin Bartolomej Hille † | Deacon | Bishop of Litoměřice, Czech Republic |
| 22.8 | Ordained Priest | Luigi Landi-Vittori † | Priest | Bishop of Assisi, Italy |
| 24.2 | Ordained Priest | Gaspare Pitocchi (Petocchi) † | Priest | Bishop of Nepi e Sutri, Italy |
| 25.9 | Ordained Priest | Ludovico Rizzuti † | Priest | Archbishop of Lanciano (e Ortona), Italy |
| 24.3 | Ordained Priest | Benedetto Terenzio † | Priest | Bishop of Trivento, Italy |
| 71.1 | Died | Philipp Franz Wilderich Nepomuk von Walderdorf † | Bishop of Speyer, Germany |
| 23 Apr | 23.4 | Ordained Priest | Augustin Bartolomej Hille † | Priest | Bishop of Litoměřice, Czech Republic |
| 83.1 | Died | Joseph-Marie Paget † | Bishop Emeritus of Genève {Geneva}, Switzerland |
| 28 Apr | 80.6 | Died | Filippo Carandini † | Cardinal, Cardinal-Deacon of Sant’Eustachio |
| 29 Apr | | Died | Edward French † | Bishop of Elphin, Ireland |
| 22.6 | Ordained Priest | Francesco Pichi † | Priest | Bishop Emeritus of Tivoli, Italy |
| 22.5 | Ordained Priest | Pierre-Flavien Turgeon † | Priest of Québec, Canada | Archbishop of Québec, Canada |
| 30 Apr | | Born | Raffaele Corradi, O.C.D. † | San Remo | Bishop of Bagnoregio (Bagnorea), Italy |
| May | 87.9 | Died | Michele Continisi † | Bishop of Giovinazzo e Terlizzi, Italy |
| 7 May | 67.3 | Died | Angiolo (Angelo) Cesarini † | Titular Bishop of Milevum |
| 13 May | 19.0 | Professed | Richard Pius Miles, O.P. † | Member of Order of Friars Preachers | Bishop of Nashville, Tennessee, USA |
| 14 May | | Born | Francisco de Paula Benavides y Navarrete, O.S. † | Baeza | Cardinal, Archbishop of Zaragoza, Spain |
| 81.3 | Died | Sebastiano de Rosa † | Bishop of Avellino e Frigento, Italy |
| 23 May | | Born | Martin John Spalding † | Rolling Fork, KY | Archbishop of Baltimore, Maryland, USA |
| 24 May | 21.8 | Professed | Ferdinando Elano Kahn, O.P. † | Member of Order of Friars Preachers | Bishop of Tiraspol, Moldova |
| 31 May | | Born | Flavio Chigi † | Rome, Italy | Cardinal, Archpriest of the Arcibasilica di San Giovanni in Laterano {Saint John Lateran Basilica} |
| Jun | 25.6 | Ordained Priest | John Ryan † | Priest | Bishop of Limerick, Ireland |
| 50.9 | Ordained Bishop | Juan Bautista Sacristán y Galiano † | Archbishop of Santafé en Nueva Granada, Colombia |
| 10 Jun | | Ordained Bishop | Ignace Siméon Zora † | Bishop of Damas (Syrian), Syria | Patriarch Emeritus of Antiochia {Antioch} (Syrian), Lebanon |
| 11 Jun | 55.5 | Ordained Bishop | Narciso Coll y Prat † | Archbishop of Caracas, Santiago de Venezuela | Bishop of Palencia, Spain |
| 49.4 | Ordained Bishop | Józef Krystofowicz † | Titular Bishop of Arca in Phoenicia |
| 14 Jun | 55.7 | Died | Silvester Bubanovich † | Bishop of Križevci (Kreutz) (Križevci), Croatia |
| 16 Jun | 32.6 | Ordained Priest | Alessandro Bernetti † | Priest | Bishop of Recanati e Loreto, Italy |
| 24.7 | Ordained Priest | Adriano Giampedi † | Priest | Bishop of Alatri, Italy |
| 34.5 | Ordained Priest | Augustin-Jean Le Tourneur † | Priest | Bishop of Verdun, France |
| 24.0 | Ordained Priest | Felice Regano (Regnano) † | Priest | Bishop of Catania, Italy |
| 23.1 | Ordained Priest | Anastasius Johannes Sedlag † | Priest of Wrocław (Breslau), Poland | Bishop of Chelmno (Culma, Kulm), Poland |
| 39.9 | Ordained Priest | Jules-François de Simony † | Priest | Bishop Emeritus of Soissons (-Laon), France |
| 17 Jun | | Born | Jean-Félix-Onésime Luquet, M.E.P. † | Langres, France | Coadjutor Vicar Apostolic Emeritus of Madurai, India |
| 18 Jun | | Born | François-André-Xavier de Gaffory † | Corte | Bishop of Ajaccio, France |
| 19 Jun | 62.5 | Died | Richard Luke Concanen, O.P. † | Bishop of New York, New York, USA |
| 21 Jun | 77.1 | Died | Giovanni Battista Caprara Montecuccoli † | Cardinal, Archbishop of Milano {Milan}, Italy |
| 22 Jun | | Born | Giovanni Montuoro † | Napoli | Bishop of Bovino, Italy |
| 24 Jun | 42.3 | Appointed | Antônio Rodrigues de Aguiar † | Prelate of Goiás, Brazil |
| 29 Jun | 54.2 | Ordained Bishop | Jean-Louis Florens, M.E.P. † | Titular Bishop of Zela | Coadjutor Vicar Apostolic of Se-Ciuen (Setchoan), China |
| 48.1 | Appointed | Esprit-Marie-Joseph Floren, M.E.P. † | Titular Bishop of Sozopolis in Haemimonto | Vicar Apostolic of Siam, Thailand |