| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 16.0 | Professed | Benigno Avenati, B. † | Member of Clerics Regular of St. Paul | Priest |
| 62.1 | Died | Baltasar Bastero Lladó † | Bishop Emeritus of Gerona, Spain |
| Born | Francesco Borzi † | | Archbishop of Bar (Antivari), Montenegro |
| 18.8 | Professed | Marcello Cortenovis, B. † | Member of Clerics Regular of St. Paul | Vicar Apostolic of Ava e Pegů, Myanmar |
| Born | John Cruise † | | Bishop of Ardagh (and Clonmacnois), Ireland |
| 23.1 | Professed | Nicolas de Luce, O. Praem. † | Member of Order of the Canons Regular of Premontre; Norbertines | Abbot |
| 23.9 | Ordained Priest | William Egan † | Priest of Waterford and Lismore, Ireland | Bishop |
| Born | Thomas O’Connor † | | Bishop of Achonry, Ireland |
| Born | Hugh O’Kelly † | | Bishop of Dromore, Ireland |
| Born | Charles O’Reilly † | | Bishop of Kilmore, Ireland |
| 50.0 | Died | Teodozy Rudnicki-Lubieniecki † | Bishop of Lutsk and Ostroh (Ukrainian), Ukraine |
| 26.0 | Ordained Priest | Vencentius de Via † | Priest | Bishop of Tinos and Mykonos, Greece |
| 1 Jan | 41.7 | Selected | Ludovico Sabatini d’Anfora, C.P.O. † | Bishop of L’Aquila, Italy |
| 3 Jan | 75.0 | Selected | Anthony O’Donnell, O.F.M. † | Bishop of Raphoe, Ireland |
| 6 Jan | | Born | Baldassare Mormile, C.R. † | | Archbishop of Capua, Italy |
| 9 Jan | 66.1 | Selected | Felipe Manrique de Lara † | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| 16 Jan | 59.0 | Appointed | James Butler (1st) † | Titular Bishop of Tlos | Archbishop of Cashel (-Emly), Ireland |
| 59.0 | Confirmed | James Butler (1st) † | Coadjutor Archbishop of Cashel (-Emly), Ireland | Archbishop |
| 50.0 | Selected | Juan B. Taborga y Durana (Tabarga) † | Bishop of Panamá |
| 17 Jan | 62.5 | Died | José Cepeda † | Bishop of Mallorca, Spain |
| 50.7 | Resigned | Andrés Licht y Barrera † | Bishop of Guadix, Spain | Bishop Emeritus |
| 45.9 | Resigned | Francisco de Mello, O.F.M. Ref. † | Archbishop of Goa, India | Bishop of Faro {Algarve}, Portugal |
| 18 Jan | 23.1 | Ordained Priest | András Ország † | Priest | Auxiliary Bishop of Pécs, Hungary |
| 19 Jan | 68.4 | Confirmed | Juan de Arechederra, O.P. † | Bishop of Nueva Segovia, Philippines | Bishop-Elect |
| 62.5 | Appointed | José Cepeda † | Bishop of Coria, Spain | Bishop of Mallorca, Spain |
| 55.0 | Confirmed | Joăo da Cruz Salgado de Castilho, O.C.D. † | Bishop of Miranda (do Douro), Portugal |
| 64.8 | Appointed | Joăo Luis Vasconcellos, S.J. † | Coadjutor Archbishop of Cranganore (Angamala), India | Archbishop |
| 64.8 | Appointed | Joăo Luis Vasconcellos, S.J. † | Titular Archbishop of Thermopylae | Archbishop of Cranganore (Angamala), India |
| 36.6 | Appointed | Domenico Monti † | Bishop of Anagni, Italy | Archbishop of Urbino, Italy |
| 75.0 | Confirmed | Anthony O’Donnell, O.F.M. † | Bishop of Raphoe, Ireland |
| 48.0 | Confirmed | Raimondo Quesada † | Bishop of Bosa, Italy |
| 41.7 | Confirmed | Claude Humbert de Rolland de Bery † | Archbishop of Tarentaise (Moűtiers-en-Tarentaise), France |
| 45.0 | Confirmed | Antonius Taveira de Neiva Brum † | Archbishop of Goa, India | Archbishop Emeritus |
| 67.3 | Appointed | Miguel (a S. Iosepho) Valejo Berlanga, O.SS.T. † | Bishop of Guadix, Spain |
| 22 Jan | | Born | Johann Nepomuk von Dankesreither † | | Bishop of Sankt Pölten, Austria |
| 25 Jan | 22.9 | Ordained Priest | José da Avé-Maria Leite da Costa e Silva, O.SS.T. † | Priest of Order of the Most Holy Trinity | Bishop of Angra, Portugal |
| 36.7 | Ordained Bishop | Domenico Monti † | Bishop of Anagni, Italy | Archbishop of Urbino, Italy |
| 67.3 | Ordained Bishop | Miguel (a S. Iosepho) Valejo Berlanga, O.SS.T. † | Bishop of Guadix, Spain |
| 26 Jan | 52.6 | Selected | Antônio da Madre de Deus Galvăo, O.F.M. Ref. † | Bishop of Săo Paulo, Brazil |
| 1 Feb | | Born | Claude-Jean-Joseph Brulley de La Bruničre † | | Bishop of Mende, France |
| 5 Feb | | Born | James Jerome Sharrock, O.S.B. † | | Priest of Order of Saint Benedict |
| 10 Feb | | Born | Jozef Schedy † | | Bishop of the Titular See |
| 11 Feb | 82.0 | Died | Vincenzo Bichi † | Cardinal, Cardinal-Bishop of Frascati |
| 14 Feb | 64.4 | Died | Jean-Georges de Souillac † | Bishop of Lodčve, France |
| 16 Feb | 62.2 | Died | Francesco Girolamo Bona † | Vicar Apostolic of Constantinople, Turkey |
| 20 Feb | 52.3 | Died | Francisco Cuartero Lumbreras † | Bishop of Segorbe, Spain |
| 61.8 | Died | Giovanni Rossi, C.R. † | Archbishop of Taranto, Italy |
| 21 Feb | 22.9 | Ordained Priest | Giacinto Francesco Rolfi, O.E.S.A. † | Priest of Order of Hermits of St. Augustine | Bishop of Iglesias, Italy |
| 23.5 | Ordained Deacon | Giulio Cesare Viancini † | Deacon | Bishop of Biella, Italy |
| 22.7 | Ordained Priest | Ludwig Joseph von Welden auf Laubheim und Hohenaltingen † | Priest of Freising, Germany | Bishop |
| 23 Feb | 54.4 | Appointed | Domenico de Amato † | Bishop of Castro di Puglia, Italy |
| 41.0 | Appointed | Nicola Ferri † | Bishop of Bitonto, Italy | Bishop of Satriano e Campagna, Italy |
| 75.4 | Appointed | Giovanni Antonio Guadagni, O.C.D. † | Cardinal-Bishop of Frascati | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 51.1 | Appointed | Giovanni Battista Lattanzi † | Bishop of Cittŕ di Castello, Italy | Bishop Emeritus |
| 66.2 | Confirmed | Felipe Manrique de Lara † | Bishop of Ayacucho o Huamanga (Guamanga), Peru |
| 55.9 | Appointed | José Ignacio Rodríguez Cornejo † | Bishop of Plasencia, Spain |
| 53.7 | Appointed | Cesare Rossi † | Bishop of Gerace, Italy |
| 41.8 | Confirmed | Ludovico Sabatini d’Anfora, C.P.O. † | Bishop of L’Aquila, Italy |
| 50.1 | Confirmed | Juan B. Taborga y Durana (Tabarga) † | Bishop of Panamá |
| 1 Mar | 54.5 | Ordained Bishop | Domenico de Amato † | Bishop of Castro di Puglia, Italy |
| 41.0 | Ordained Bishop | Nicola Ferri † | Bishop of Bitonto, Italy | Bishop of Satriano e Campagna, Italy |
| 51.1 | Ordained Bishop | Giovanni Battista Lattanzi † | Bishop of Cittŕ di Castello, Italy | Bishop Emeritus |
| 41.8 | Ordained Bishop | Claude Humbert de Rolland de Bery † | Archbishop of Tarentaise (Moűtiers-en-Tarentaise), France |
| 41.9 | Ordained Bishop | Ludovico Sabatini d’Anfora, C.P.O. † | Bishop of L’Aquila, Italy |
| 8 Mar | 45.1 | Ordained Bishop | Antonius Taveira de Neiva Brum † | Archbishop of Goa, India | Archbishop Emeritus |
| 13 Mar | | Born | José Pegado de Azevedo, C.O. † | | Bishop of Angra, Portugal |
| 14 Mar | 23.5 | Ordained Priest | Giovanni Battista Alagona † | Priest of Siracusa, Italy | Bishop |
| 24.0 | Ordained Priest | Bartolomeo Bacher † | Priest | Bishop of Ripatransone, Italy |
| 28.6 | Ordained Deacon | Ferdynand Onufry Kicki † | Deacon | Archbishop of Lviv, Ukraine |
| 25.2 | Ordained Priest | Ermenold Piesport, O.S.B. † | Priest of Order of Saint Benedict | Auxiliary Bishop of Fulda, Germany |
| 25.2 | Ordained Priest | Carlo Santacolomba † | Priest | Prelate of Santa Lucia del Mela, Italy |
| 23.5 | Ordained Priest | Giulio Cesare Viancini † | Priest | Bishop of Biella, Italy |
| 22.9 | Ordained Deacon | Gabriel Wodzyński † | Deacon | Bishop of Smoleńsk, Poland |
| 15 Mar | 24.0 | Ordained Priest | Ferdinando de Vicariis, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Melfi e Rapolla, Italy |
| 74.2 | Died | Dionysios Mondinňs † | Bishop of Milo |
| 16 Mar | 43.9 | Appointed | Andrés Bustamante † | Bishop of Palencia, Spain |
| 52.8 | Confirmed | Antônio da Madre de Deus Galvăo, O.F.M. Ref. † | Bishop of Săo Paulo, Brazil |
| 18 Mar | | Appointed | Blaise Paoli † | Vicar Apostolic of Constantinople, Turkey |
| Appointed | Blaise Paoli † | Titular Archbishop of Larissa in Thessalia | Vicar Apostolic of Constantinople, Turkey |
| 21 Mar | 56.3 | Died | Francesco de Santa Rosa de Viterbo, O.F.M. Ref. † | Bishop of Nanking [Nanjing], China |
| 22 Mar | 35.2 | Selected | Jean-Félix-Henri de Fumel † | Bishop of Lodčve, France |
| 23.4 | Ordained Deacon | Karl Aloys von Königsegg und Rothenfels † | Deacon of Köln {Cologne}, Germany | Auxiliary Bishop |
| 25 Mar | 23.4 | Ordained Priest | Karl Aloys von Königsegg und Rothenfels † | Priest of Köln {Cologne}, Germany | Auxiliary Bishop |
| 28 Mar | 25.3 | Ordained Deacon | Ignatius Dłuski † | Deacon | Auxiliary Bishop of Kamyanets-Podilskyi (Kamieniec), Ukraine |
| 22.9 | Ordained Priest | Giuseppe de Rosa † | Priest | Bishop of Policastro, Italy |
| 42.1 | Ordained Deacon | Adam Friedrich von Seinsheim † | Deacon | Bishop of Würzburg, Germany |
| 23.0 | Ordained Priest | Gabriel Wodzyński † | Priest | Bishop of Smoleńsk, Poland |
| 1 Apr | | Born | Etienne-André-François de Paule de Fallot de Béaupré de Beaumont † | | Bishop Emeritus of Vaison, France |
| Born | Jean-Paul Faudoas † | | Bishop Emeritus of Meaux, France |
| 6 Apr | 76.5 | Died | Giovanni Battista Maria Multedo, O.C.D. † | Vicar Apostolic of Malabar, India |
| 40.2 | Succeeded | Mikołaj Szostak, O.C.D. † | Vicar Apostolic of Malabar, India |
| 7 Apr | | Born | Timoteo Maria (Antonio) Ascensi, O.C.D. † | | Bishop of Osimo e Cingoli, Italy |
| 9 Apr | | Born | Adrijan Holovnja (Hołownia), O.S.B.M. † | | Auxiliary Bishop of Žyrovyci (Ukrainian), Lithuania |
| 12 Apr | 48.2 | Ordained Bishop | Raimondo Quesada † | Bishop of Bosa, Italy |
| 52.0 | Ordained Bishop | Franjo Thauszy † | Bishop of Bosnia (Bosna, Diacovar, Diakovar), Croatia | Bishop of Zagreb (Agram), Croatia |
| 22 Apr | 49.2 | Selected | Enrichetto Virginio (Raffale Francesco) Natta, O.P. † | Cardinal, Bishop of Alba (Pompea), Italy |
| 23 Apr | 51.1 | Ordained Bishop | Zsigmond Antal Sztojka de Sala et Kricsfalva † | Bishop of Transilvania, Erdély, Siebenbürgen, Romania | Bishop Emeritus |
| 25 Apr | | Born | Manuel Pacheco de Rčsende † | | Bishop of Aveiro, Portugal |
| 27 Apr | 40.7 | Appointed | Bartolomeo Coccoli † | Bishop of Montepeloso, Italy |
| 47.3 | Appointed | Lorenzo Despuig Cotoner † | Bishop of Mallorca, Spain | Archbishop of Tarragona, Spain |
| 51.2 | Appointed | Benito Marín, O.S.B. † | Bishop of Jaén, Spain |
| 65.6 | Appointed | Francisco Javier Sánchez Cabezón † | Bishop of Astorga, Spain |
| 39.3 | Appointed | Giorgio (Gjergi) Vladagni † | Bishop of Sapë, Albania |
| May | 59.3 | Ordained Bishop | James Butler (1st) † | Titular Bishop of Tlos | Archbishop of Cashel (-Emly), Ireland |
| 3 May | 47.3 | Ordained Bishop | Lorenzo Despuig Cotoner † | Bishop of Mallorca, Spain | Archbishop of Tarragona, Spain |
| 8 May | 37.3 | Appointed | Stefan Sylwester Rudnicki-Lubieniecki, O.S.B.M. † | Bishop of Lutsk and Ostroh (Ukrainian), Ukraine |
| 10 May | 44.1 | Ordained Bishop | Andrés Bustamante † | Bishop of Palencia, Spain |
| 40.8 | Ordained Bishop | Bartolomeo Coccoli † | Bishop of Montepeloso, Italy |
| 14 May | | Born | António José Cordeiro † | | Bishop of Aveiro, Portugal |
| 22 May | 61.3 | Died | Nicolaus (Arcangelo) Bianchini, O.C.D. † | Bishop of Sovana (Soana), Italy |
| Born | [Claude Debertier] † | | Bishop Emeritus of [Aveyron (Constitutional), France] |
| 81.3 | Died | Matthew Pritchard, O.F.M. Rec. † | Vicar Apostolic of Western District, England, Great Britain |
| 63.3 | Succeeded | William Laurence York, O.S.B. † | Vicar Apostolic of Western District, England, Great Britain | Vicar Apostolic Emeritus |
| 23 May | 25.5 | Ordained Priest | Ignatius Dłuski † | Priest | Auxiliary Bishop of Kamyanets-Podilskyi (Kamieniec), Ukraine |
| 22.8 | Ordained Priest | Antonio de Torres, O.S.B. † | Priest of Order of Saint Benedict | Bishop of Sessa Aurunca, Italy |
| 24.0 | Ordained Priest | Antonín Bernard Gürtler † | Priest | Titular Bishop of Tium |
| 28.8 | Ordained Priest | Ferdynand Onufry Kicki † | Priest | Archbishop of Lviv, Ukraine |
| 25 May | 28.8 | Appointed | Franz Xaver von Adelmann von Adelmannsfelden † | Auxiliary Bishop of Augsburg, Germany |
| 28.8 | Appointed | Franz Xaver von Adelmann von Adelmannsfelden † | Titular Bishop of Mactaris | Auxiliary Bishop of Augsburg, Germany |
| 62.4 | Appointed | Francisco Díaz Santos y Bullón † | Bishop of Sigüenza, Spain | Archbishop of Burgos, Spain |
| 35.3 | Confirmed | Jean-Félix-Henri de Fumel † | Bishop of Lodčve, France |
| 48.7 | Appointed | Juan José García Alvaro † | Bishop of Coria, Spain |
| 45.3 | Appointed | Fabian Franziszek Pląskowski † | Auxiliary Bishop of Chelmno (Culma, Kulm), Poland |
| 45.3 | Appointed | Fabian Franziszek Pląskowski † | Titular Bishop of Martyropolis | Auxiliary Bishop of Chelmno (Culma, Kulm), Poland |
| Jun | 65.6 | Died | Benedetto De Luca † | Bishop of Treviso, Italy |
| 2 Jun | | Born | Etienne-Jean-Baptiste des Galois de la Tour † | | Archbishop of Bourges, France |
| 6 Jun | 65.4 | Died | Francis Stuart, O.F.M. † | Bishop of Down and Connor, Ireland |
| 8 Jun | | Born | Omobono Offredi † | | Bishop of Cremona, Italy |
| 10 Jun | 55.4 | Resigned | John Brullaughan (Ó Brolcháin) † | Bishop-Elect of Derry, Ireland | Former Bishop-Elect |
| 74.3 | Died | Nicola Preti Castriota † | Bishop Emeritus of Vieste, Italy |
| 19 Jun | 59.6 | Died | Pietro Maria Suárez † | Bishop of Adria, Italy |
| 21 Jun | | Born | Fabiano Giuseppe Giacomo Luigi Galliani, O.F.M. Cap. † | | Titular Bishop of Pergamum |
| 65.7 | Ordained Bishop | Francisco Javier Sánchez Cabezón † | Bishop of Astorga, Spain |
| 23 Jun | | Born | Manuel Benito y Tabernero † | | Bishop of Solsona, Spain |
| 24 Jun | 24.9 | Ordained Priest | Santiago José Hechavarría y Elguesúa † | Priest of Santiago de Cuba | Bishop of Tlaxcala (Puebla de los Angeles), México |