| Date | Age | Event | Bishop | Title | Current Title |
| May | 64.5 | Resigned | Agostino Pipia, O.P. † | Master General of Order of Friars Preachers | Cardinal, Bishop Emeritus of Osimo e Cingoli, Italy |
| 1 May | 53.8 | Died | Pietro Barbarigo † | Patriarch of Venezia {Venice}, Italy |
| 67.2 | Ordained Bishop | Vincenzo Ferrero, O.P. † | Bishop of Gravina (di Puglia), Italy | Bishop of Lucera, Italy |
| 28.9 | Ordained Priest | Giuseppe di Marsciano † | Priest | Bishop of Orvieto, Italy |
| 45.3 | Ordained Bishop | Andrés Murillo Velarde † | Bishop of Pamplona, Spain |
| 4 May | | Born | Károly Esterházy de Galántha † | | Bishop of Eger, Hungary |
| 5 May | 25.8 | Selected | Philipp Ludwig von Sinzendorf † | Bishop of Győr (Raab), Hungary | Cardinal, Bishop of Wrocław (Breslau), Poland |
| 13 May | 54.3 | Ordained Bishop | Manuel Coutinho † | Bishop of Funchal, Portugal | Bishop of Lamego, Portugal |
| 51.4 | Ordained Bishop | José de Fialho, O. Cist. † | Bishop of Olinda, Brazil | Bishop of Guarda, Portugal |
| 52.6 | Ordained Bishop | Antônio de Guadalupe, O.F.M. Disc. † | Bishop of São Sebastião do Rio de Janeiro, Brazil |
| 14 May | | Born | Ange-François de Talaru de Chalmazel † | | Bishop of Coutances, France |
| 20 May | 52.5 | Ordained Bishop | Hieronim Maciej Jełowicki † | Titular Bishop of Pella | Auxiliary Bishop of Lviv, Ukraine |
| 21 May | 32.6 | Ordained Priest | Franciscus Aloysius von Lamberg † | Priest | Auxiliary Bishop of Passau, Germany |
| 22 May | | Born | Johann Heinrich von Kerens, S.J. † | | Bishop of Sankt Pölten, Austria |
| 24 May | | Born | Angelo Maria Durini † | | Cardinal, Titular Archbishop of Ancyra |
| 26 May | 26.7 | Ordained Priest | Jean Antoine de Robiano † | Priest | Bishop of Roermond, Netherlands |
| 22.9 | Ordained Priest | Antonino Sersale † | Priest | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 27 May | 54.6 | Ordained Bishop | Cinugo Settimio Cinughi † | Bishop of Pienza, Italy |
| 49.2 | Ordained Bishop | Nicola Preti Castriota † | Bishop of Vieste, Italy | Bishop Emeritus |
| 29 May | | Born | Juan Antonio Sánchez, O.F.M. Disc. † | | Bishop of Linares o Nueva León, Nuevo León, México |
| 30 May | 23.3 | Ordained Deacon | Pedro Pardo de Figueroa, O.M. † | Deacon of Order of the Minims | Archbishop of Guatemala |
| 2 Jun | | Born | Marco Aurelio Balbis Bertone † | | Bishop of Novara, Italy |
| 4 Jun | 81.4 | Died | Andrea Brancaccio, C.R. † | Archbishop of Cosenza, Italy |
| 10 Jun | 52.0 | Ordained Bishop | Charles du Plessis d’Argentré † | Bishop of Tulle, France |
| 11 Jun | 38.5 | Confirmed | Domenico Antonio Berretti † | Bishop of Acerra, Italy |
| Appointed | Juan Cavero de Toledo † | Bishop of Arequipa, Peru |
| 44.3 | Elevated to Cardinal | Niccolò Paolo Andrea Coscia † | Cardinal, Archbishop Emeritus of Benevento, Italy |
| 64.9 | Elevated to Cardinal | Niccolò del Giudice † | Cardinal, Cardinal-Deacon of Santa Maria ad Martyres |
| 62.1 | Appointed | Marco Gradenigo † | Patriarch of Venezia {Venice}, Italy |
| 55.5 | Appointed | Bernardo Jiménez Cascante † | Bishop of Barcelona, Spain |
| 38.4 | Confirmed | Charles-Louis-Auguste Le Tonnelier de Breteuil † | Bishop of Rennes, France |
| 68.6 | Appointed | Vittorio Mazzocca, O.P. † | Bishop of Novigrad (Cittanova), Croatia |
| 48.5 | Appointed | Joannes de Moncada Hurtado de Figueroa † | Bishop of Santa Cruz de la Sierra, Bolivia |
| 23.3 | Ordained Priest | Pedro Pardo de Figueroa, O.M. † | Priest of Order of the Minims | Archbishop of Guatemala |
| 56.2 | Appointed | Johann Baptist von Reinach-Hirzbach † | Titular Bishop of Abdera | Coadjutor Bishop of Basel, Switzerland |
| 56.2 | Confirmed | Johann Baptist von Reinach-Hirzbach † | Coadjutor Bishop of Basel, Switzerland |
| 28.3 | Appointed | Charles-Antoine de la Roche-Aymon † | Auxiliary Bishop of Limoges, France | Cardinal, Archbishop of Reims, France |
| 28.3 | Appointed | Charles-Antoine de la Roche-Aymon † | Titular Bishop of Sarepta | Cardinal, Archbishop of Reims, France |
| 31.0 | Appointed | Nicola Stanislavich, O.F.M. Obs. † | Bishop of Nicopoli, Bulgaria | Bishop of Csanád, Hungary |
| 13 Jun | 53.2 | Installed | Andrés de Orbe y Larreátegui † | Archbishop of Valencia, Spain | Archbishop Emeritus |
| 73.9 | Died | Ortensio Visconti † | Bishop of Lodi, Italy |
| 17 Jun | 47.4 | Ordained Bishop | Carlos Bermudez de Castro † | Archbishop of Manila, Philippines |
| 32.9 | Ordained Deacon | Carmine Cioffi † | Deacon | Titular Bishop of Antaeopolis |
| 25.0 | Ordained Priest | Ottavio Maria de Mari, C.R.S. † | Priest of Clerks Regular of Somasca | Bishop of Savona, Italy |
| Born | Baldassare Barone de Moncada † | | Bishop of San Marco (Argentano), Italy |
| 19 Jun | | Born | Giovanni Antonio Cossu, O.S.M. † | | Bishop of Bosa, Italy |
| 23 Jun | 72.9 | Appointed | Giuseppe de Carolis † | Bishop of Aquino e Pontecorvo, Italy |
| 24 Jun | 38.5 | Ordained Bishop | Domenico Antonio Berretti † | Bishop of Acerra, Italy |
| 32.9 | Ordained Priest | Carmine Cioffi † | Priest | Titular Bishop of Antaeopolis |
| 68.7 | Ordained Bishop | Vittorio Mazzocca, O.P. † | Bishop of Novigrad (Cittanova), Croatia |
| 31.1 | Ordained Bishop | Nicola Stanislavich, O.F.M. Obs. † | Bishop of Nicopoli, Bulgaria | Bishop of Csanád, Hungary |
| 30 Jun | | Born | Diego Genovesi † | | Bishop of Squillace, Italy |
| 1 Jul | 70.0 | Died | Juan Bautista Alvarez de Toledo, O.F.M. Obs. † | Bishop of Guadalajara, Jalisco, México |
| 3 Jul | 53.9 | Selected | Franz Ludwig von Schenk von Castell † | Bishop of Eichstätt, Germany |
| 7 Jul | 41.5 | Selected | James O’Gallagher † | Bishop of Raphoe, Ireland | Bishop of Kildare and Leighlin, Ireland |
| 8 Jul | 39.4 | Ordained Priest | Egidio Antonio Isabelli † | Priest | Bishop of Alife, Italy |
| 10 Jul | | Born | Giannagostino Gradenigo, O.S.B. † | | Bishop of Ceneda, Italy |
| 13 Jul | 72.9 | Appointed | Giuseppe de Carolis † | Titular Archbishop of Tyana | Bishop of Aquino e Pontecorvo, Italy |
| 15 Jul | 38.5 | Ordained Bishop | Charles-Louis-Auguste Le Tonnelier de Breteuil † | Bishop of Rennes, France |
| 19 Jul | | Born | Crescenzio Maria Grippi † | | Titular Bishop of Amorium |
| 21 Jul | 41.5 | Confirmed | James O’Gallagher † | Bishop of Raphoe, Ireland | Bishop of Kildare and Leighlin, Ireland |
| 23 Jul | 44.4 | Installed | Niccolò Paolo Andrea Coscia † | Cardinal-Priest of Santa Maria in Domnica | Cardinal, Archbishop Emeritus of Benevento, Italy |
| 41.5 | Appointed | Vincenzo Maria d’Aragona, O.P. † | Archbishop of Cosenza, Italy |
| 65.1 | Installed | Niccolò del Giudice † | Cardinal, Cardinal-Deacon of Santa Maria ad Martyres |
| 36.5 | Appointed | Imrich I. Esterházy de Galántha † | Titular Bishop of Dora | Bishop of Nitra, Slovakia |
| 45.7 | Appointed | Franciszek Antoni Kobielski † | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland | Bishop of Lutsk (Łuck), Ukraine |
| 45.7 | Appointed | Franciszek Antoni Kobielski † | Titular Bishop of Antaeopolis | Bishop of Lutsk (Łuck), Ukraine |
| 40.2 | Appointed | Carlo Ambrogio Mezzabarba † | Bishop of Lodi, Italy |
| 45.9 | Appointed | Carlo Pignatelli † | Titular Archbishop of Traianopolis in Rhodope |
| 67.2 | Appointed | Francesco Trevisani † | Bishop of Verona, Italy |
| 24 Jul | | Born | Santiago José Hechavarría y Elguesúa † | | Bishop of Tlaxcala (Puebla de los Angeles), México |
| 25 Jul | 41.5 | Ordained Bishop | Vincenzo Maria d’Aragona, O.P. † | Archbishop of Cosenza, Italy |
| 26 Jul | | Ordained Priest | Nicola de Simoni † | Priest | Titular Bishop of Marciana |
| 29 Jul | 54.6 | Ordained Bishop | Gabriel Germanos Farhat, O.L.M. † | Bishop of Alep [Beroea, Halab] (Maronite), Syria |
| 30 Jul | 67.4 | Died | Giovanni Crisostomo Battelli † | Titular Archbishop of Amasea |
| 2 Aug | 76.9 | Died | Carlo Maria Pianetti † | Bishop of Larino, Italy |
| 5 Aug | 28.4 | Ordained Bishop | Charles-Antoine de la Roche-Aymon † | Titular Bishop of Sarepta | Cardinal, Archbishop of Reims, France |
| 9 Aug | | Born | Nicola Sanchez de Luna † | | Bishop of Nola, Italy |
| 10 Aug | | Born | Raymond de Durfort † | | Archbishop of Besançon, France |
| 20 Aug | | Born | Antonio Maria Colonna, O.S.B. † | | Titular Bishop of Philadelphia in Arabia |
| 23 Aug | 58.8 | Died | Christian August von Sachsen-Zeitz † | Cardinal, Archbishop of Esztergom, Hungary |
| 24 Aug | 71.2 | Died | Ferdinand Paul Ernest de Berlo de Brus † | Bishop of Namur {Namen}, Belgium |
| 28 Aug | 65.8 | Selected | Francesco Bataller, O. Carm. † | Bishop of Ugento, Italy |
| 31 Aug | 60.1 | Selected | Imre Esterházy, O.S.P.P.E. † | Archbishop of Esztergom, Hungary |