Date | Age | Event | Bishop | Title | Current Title |
unknown | | Appointed | Arnaud † | Bishop of Fossombrone, Italy | Bishop of Apt, France |
| Died | Pierre Barrière † | Bishop of Senlis, France |
| Appointed | Lorenz von Brunne (Griming) † | Bishop of Gurk, Austria |
| Died | Gregorio da Capua, O.P. † | Archbishop of Taranto, Italy |
| Died | Guglielmo Jornet, O.F.M. † | Bishop of Sulcis, Italy |
| Died | Jean de Mafino † | Bishop of Cassano all’Jonio, Italy |
| Died | Aymon de Miolans-Urtières † | Bishop of Saint-Jean-de-Maurienne, France |
| Died | Leone de Montecaveoso † | Bishop of Conza, Italy |
| Died | Nicola , O.S.A. † | Bishop of Argos, Greece |
| Appointed | Matteo Orsini, O.P. † | Administrator of Palermo, Italy | Cardinal, Cardinal-Bishop of Sabina |
| Died | Arnaud Royardi, O.F.M. † | Bishop of Sarlat, France |
| Appointed | Guillaume de Sandreux, O.S.B. † | Bishop of Sarlat, France |
| Born | Adolf von der Mark † | | Archbishop Emeritus of Köln {Cologne}, Germany |
10 Jan | | Appointed | Jean Artaud, O.P. † | Bishop of Marseille, France |
| Appointed | Raymond , O.F.M. † | Bishop of Nice, France |
7 Feb | | Appointed | Pierre Artaudi, O.P. † | Bishop of Alba (Pompea), Italy | Bishop of Fréjus, France |
| Appointed | Arnaud Barcillon, O.F.M. † | Bishop of Vence, France |
22 Feb | 54.1 | Died | Angelo di Portasole (Portasola, Porta Sole, Porta Sola), O.P. † | Bishop of Grosseto, Italy |
27 Mar | | Died | Rudolf von Montfort (-Feldkirch) † | Bishop of Konstanz {Constance}, Germany |
8 Apr | | Appointed | Guglielmo Jaffer † | Bishop of Sulcis, Italy |
9 Apr | | Died | Henri Wogenap † | Bishop of Warmia (Ermland), Poland |
13 Apr | 46.2 | Appointed | Nikolaus de Kentzingen † | Bishop of Konstanz {Constance}, Germany |
14 Apr | 46.2 | Ordained Bishop | Nikolaus de Kentzingen † | Bishop of Konstanz {Constance}, Germany |
23 Apr | | Confirmed | John Stratford † | Archbishop of Canterbury, England, Great Britain |
26 Apr | | Appointed | Ruggero Capitignono † | Archbishop of Taranto, Italy |
8 May | | Ordained Bishop | Simon Montacute † | Bishop of Worcester, England, Great Britain | Bishop of Ely, England, Great Britain |
9 May | | Died | Bertrand de Bertrandis † | Archbishop of Tarentaise (Moûtiers-en-Tarentaise), France |
16 May | | Died | Karl Eriksen † | Archbishop of Lund, Sweden |
4 Jul | | Appointed | David O’Hiraghty † | Archbishop of Armagh, Ireland |
| Appointed | Bertrand de Saint Genes † | Patriarch of Aquileia, Italy |
13 Jul | | Appointed | Jacques de Salins † | Archbishop of Tarentaise (Moûtiers-en-Tarentaise), France |
17 Jul | | Died | Ponce (Ponç) de Gualba † | Bishop of Barcelona, Spain |
25 Jul | | Ordained Bishop | David O’Hiraghty † | Archbishop of Armagh, Ireland |
5 Aug | | Died | Arnaud Sabatier † | Bishop of Riez, France |
12 Aug | | Died | Gastón de Montcada † | Bishop of Gerona, Spain |
17 Aug | | Appointed | Gratia de Aquila, O.F.M. † | Bishop of Dulcigno (Olcini, Olgun), Montenegro | Bishop of Pula (Pola), Croatia |
29.6 | Appointed | Philippe de Cabassole † | Bishop of Cavaillon, France | Cardinal, Cardinal-Bishop of Sabina |
| Appointed | Geffroi Isnard † | Bishop of Riez, France |
| Appointed | Thomas de Ripatransone, O.P. † | Bishop of Kotor (Cattaro), Montenegro | Bishop Emeritus |
18 Aug | 42.6 | Died | Juan de Aragón † | Archbishop of Tarragona, Spain |
28 Aug | | Died | Jean de Vissec † | Bishop of Maguelonne, France |
30 Aug | | Appointed | Ferrier de Abella, O.P. † | Archbishop (Personal Title) of Barcelona, Spain | Bishop |
9 Sep | | Ordained Bishop | Gratia de Aquila, O.F.M. † | Bishop of Dulcigno (Olcini, Olgun), Montenegro | Bishop of Pula (Pola), Croatia |
10 Sep | | Appointed | Anthelme de Clermont † | Bishop of Saint-Jean-de-Maurienne, France |
| Died | Guillaume Durand de Saint-Pourçain, O.P. † | Bishop of Meaux, France |
12 Sep | | Appointed | Jean de Mandevillain † | Bishop of Arras, France | Bishop of Chalons-sur-Marne, France |
| Appointed | Pectin de Montesquieu † | Bishop of Maguelonne, France | Cardinal, Cardinal-Priest of Santi XII Apostoli |
16 Sep | | Appointed | Guidone de Guisis † | Bishop of Concordia (Sagittaria), Italy |
26 Sep | | Died | Guillaume de Trie † | Archbishop of Reims, France |
12 Oct | | Appointed | Gilberto Cruilles † | Bishop of Gerona, Spain |
| Appointed | Jean de Meulan † | Bishop of Meaux, France | Bishop of Paris, France |
| Appointed | Jean de Vienne † | Archbishop of Reims, France |
22 Oct | | Appointed | Raymond Saquet † | Bishop of Thérouanne, France | Archbishop of Lyon, France |
4 Dec | 90.9 | Died | Jacques d’Euse † | Pope (Roma {Rome}, Italy) |
20 Dec | 54.9 | Elected | Jacques Fournier, O. Cist. † | Pope (Roma {Rome}, Italy) |