Date | From | To |
24 Jan | Vicariate Apostolic of Southeastern Szechwan {Se-Ciuen Meridio-Orientale}, China
| Territory Lost | Vicariate Apostolic of Southern Szechwan {Se-Ciuen Meridionale}, China
| Erected |
24 Jan | Vicariate Apostolic of Southeastern Szechwan {Se-Ciuen Meridio-Orientale}, China
| Name Changed | Vicariate Apostolic of Eastern Szechwan {Se-Ciuen Orientale}, China
| Name Changed |
26 Feb | Diocese of Saint-Denis-de-La Réunion
| Territory Lost | Prefecture Apostolic of Zanguebar, Kenya ((or 12 Nov 1862))
| Erected |
21 Apr | Diocese of Barletta, Italy
Archdiocese of Trani e Nazareth e Bisceglie, Italy
| Name Changed | Archdiocese of Trani e Barletta (e Nazareth e Bisceglie), Italy
| Name Changed |
8 May | Diocese of Saint John in New Brunswick, New Brunswick, Canada
| Territory Lost | Diocese of Chatham, New Brunswick, Canada
| Erected |
19 May | | | Missionaries of St. Francis de Sales d’Annecy
| Approbation |
14 Jun | Diocese of Bytown, Ontario, Canada
| Name Changed | Diocese of Ottawa, Ontario, Canada
| Name Changed |
28 Aug | Vicariate Apostolic of Two Guineas and Senegambia {Guinea Superiore e Inferiore e di Sierra Leone}, Gabon
| Territory Lost | Vicariate Apostolic of Dahomey, Nigeria
| Erected |
27 Sep | Archdiocese of San Francisco, California, USA
| Territory Lost | Vicariate Apostolic of Marysville, USA
| Erected |
9 Oct | | | Congregation of the Resurrection of Our Lord Jesus Christ
| Decretum Laudis |
21 Nov | | | Missionary Sons of the Immaculate Heart of Mary
| Decretum Laudis |