Date | Age | Event | Bishop | Title | Current Title |
unknown | | Died | Gilles de Altracia, O.P. † | Bishop of Ostuni, Italy |
| Died | Amator † | Bishop of Narni, Italy |
| Died | Gui de Arvernia (Bologne) † | Bishop of Cambrai, France |
| Died | Biagio † | Bishop of Fondi (Fundi), Italy |
| Died | Giacomo Boncore † | Bishop of Bitetto, Italy |
| Died | Pierre de Castelnau-Bretenoux † | Bishop of Rodez, France |
| Died | Jourdain Catalani, O.P. † | Bishop of Kollam (Quilon, Columbum), India |
| Died | Arnaud-Roger de Comminges, C.R.S.A. † | Bishop of Clermont, France |
| Appointed | Pier Paolo Dalla Costa † | Bishop of Treviso, Italy |
| Appointed | Dennis † | Bishop of Ross, Ireland |
| Ordained Bishop | Dennis † | Bishop of Ross, Ireland |
| Died | Ubaldo de’ Gabrielli, O.S.B. † | Bishop of Treviso, Italy |
| Died | Peder Larsson † | Bishop of Skara, Sweden |
| Appointed | Bartolomeo de La Scala † | Bishop of Verona, Italy |
| Appointed | Alain Le Gall de Riec † | Bishop of Quimper, France |
| Died | Raimondo de Mausaco, O.F.M. † | Bishop of Aversa, Italy |
| Born | Cosmato Gentile de’ Migliorati † | | Pope (Roma {Rome}, Italy) |
| Died | Miklós Koszegi † | Bishop of Győr (Raab), Hungary |
| Resigned | Matteo Orsini, O.P. † | Administrator of Palermo, Italy | Cardinal, Cardinal-Bishop of Sabina |
| Appointed | Nicola Perrese † | Bishop of Ruvo (Ruo)(di Puglia), Italy |
| Died | Ugolino , O.F.M. Conv. † | Bishop of Faenza, Italy |
| Died | Pierre de Vie † | Bishop of Albi, France |
| Died | Niccolò di Villanova, O.S.B. † | Bishop of Verona, Italy |
17 Jan | | Born | Fernando Álvarez de Albornoz † | | Archbishop of Sevilla {Seville}, Spain |
31 Jan | | Appointed | Bernard d’Albi † | Bishop of Rodez, France | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| Appointed | Guy Baudet † | Bishop of Langres, France |
66.0 | Died | Luca Fieschi † | Cardinal, Cardinal-Deacon of Santi Cosma e Damiano |
20 Feb | 66.1 | Ordained Bishop | Gotius (Gozzio) Battaglia † | Cardinal, Titular Patriarch of Constantinople |
27 Feb | | Appointed | Peder Jensen † | Archbishop of Lund, Sweden |
28 Feb | | Died | Gutierre Ruiz de Mesa (Téllez) † | Bishop of Córdoba, Spain |
18 Mar | | Ordained Bishop | Guy Baudet † | Bishop of Langres, France |
20 Mar | | Appointed | Juan Pérez † | Bishop of Córdoba, Spain |
24 Mar | | Died | Pierre de Chappes † | Cardinal, Cardinal-Priest of Santi Silvestro e Martino ai Monti |
27 Mar | | Died | William Ayermin † | Bishop of Norwich, England, Great Britain |
17 Apr | | Appointed | Lino † | Bishop of Narni, Italy |
24 Apr | | Died | Guy de Harcourt † | Bishop of Lisieux, France |
| Appointed | Ratherius de Miremont † | Bishop of Vaison, France | Bishop of Monte Cassino, Italy |
| Appointed | Johann von Munsingen † | Bishop of Basel, Switzerland |
| Appointed | Leopold von Egloffstein † | Bishop of Bamberg, Germany |
3 May | | Died | Eustace de l’Eau † | Bishop of Limerick, Ireland |
4 May | | Ordained Bishop | Pier Paolo Dalla Costa † | Bishop of Treviso, Italy |
10 May | | Appointed | Bonifazio de Mutina † | Bishop of Modena, Italy | Bishop of Como, Italy |
| Appointed | Jean de Cojordan † | Bishop of Avignon, France | Bishop of Mirepoix, France |
| Appointed | Pierre Ferri † | Bishop of Chieti, Italy |
| Appointed | Garcia Prego † | Bishop of Tuy, Spain |
| Appointed | Rolando Scarampi † | Bishop of Reggio Emilia, Italy | Bishop Emeritus |
| Appointed | Tommaso Valignani † | Bishop of Marsi, Italy |
18 May | | Ordained Bishop | Hugues de Châtillon † | Bishop of (Saint-Bertrand de) Comminges, France |
4 Jun | 76.4 | Died | Guillaume Pierre Godin, O.P. † | Cardinal, Cardinal-Bishop of Sabina |
16 Jun | | Ordained Bishop | Garcia Prego † | Bishop of Tuy, Spain |
17 Jun | | Ordained Bishop | Leopold von Egloffstein † | Bishop of Bamberg, Germany |
17 Jul | | Appointed | Bartolomeo , O.S.B. † | Bishop of Aversa, Italy |
| Appointed | Guillaume d’Auxonne † | Bishop of Cambrai, France | Bishop of Autun, France |
| Appointed | Raymond de Montaigu † | Bishop of Clermont, France |
| Appointed | Pierre de Palude, O.P. † | Administrator of (Saint-Lizier de) Couserans (or Conserans), France | Titular Patriarch of Jerusalem {Gerusalemme}, Palestine |
Aug | | Installed | Bernard d’Albi † | Bishop of Rodez, France | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
19 Aug | | Died | Angelo Dolfin † | Bishop of Castello, Italy |
27 Aug | | Appointed | Niccolò Morosini † | Bishop of Castello, Italy |
28 Aug | | Died | Walram von Veldenz † | Bishop of Speyer, Germany |
4 Sep | | Died | Pietro di Moncada † | Bishop of Siracusa, Italy |
25 Sep | | Selected | Gerhard von Ehrenberg † | Bishop of Speyer, Germany |
27 Sep | | Ordained Bishop | Bartolomeo de La Scala † | Bishop of Verona, Italy |
Oct | | Died | Tedice d’Aliotto Visdomini † | Bishop of Fiesole, Italy |
4 Oct | | Died | Landolfo † | Archbishop of Bari (-Canosa), Italy |
6 Oct | | Ordained Bishop | Niccolò Morosini † | Bishop of Castello, Italy |
8 Oct | | Died | Guillaume d’Astre, O.F.M. † | Bishop of Apt, France |
9 Oct | | Died | Enrico di Metz † | Bishop of Trento, Italy |
22 Oct | | Ordained Bishop | Givoanni Brusato, O.S.Marc. † | Bishop of Faenza, Italy |
1 Nov | | Died | Albert von Enn † | Bishop of Brixen {Bressanone}, Italy |
17 Nov | | Died | Pierre Ferri † | Bishop of Chieti, Italy |
18 Nov | | Appointed | Alan O’Hathern † | Bishop of Kerry (o Ardfert) e Aghadoe, Ireland |
| Appointed | Pietro , O.F.M. † | Bishop of Fondi (Fundi), Italy |
23 Nov | | Appointed | Matthäus Andergassen † | Bishop of Brixen {Bressanone}, Italy |
26 Nov | | Appointed | Marco Semitecolo † | Bishop of Capodistria (Capo d’Istria)(Koper), Slovenia |
2 Dec | | Appointed | Guillaume Audibert † | Bishop of Apt, France | Bishop of Périgueux (Vesuna), France |
8 Dec | | Appointed | Guillaume de Charmont † | Bishop of Lisieux, France |
9 Dec | | Appointed | Lorenzo Lorandi † | Bishop of Bosnia (Bosna, Diacovar, Diakovar), Croatia |
14 Dec | | Appointed | Beltramino Paravicini † | Bishop of Chieti, Italy | Bishop of Bologna, Italy |