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Changes in Ecclesiastical Circumscriptions

in Canada

Canada
DateAscendingChange
1658.04.11Apostolic Vicariate of Nouvelle-France was established (from Metropolitan Archdiocese of Rouen)
1674.10.01Apostolic Vicariate of Nouvelle-France was promoted as Diocese of Québec
1784.05.30Apostolic Prefecture of Newfoundland was established (from Diocese of Québec)
1796.01.05Apostolic Prefecture of Newfoundland was promoted as Apostolic Vicariate of Newfoundland
1817.07.04Apostolic Vicariate of Nova Scotia was established (from Diocese of Québec)
1819.01.12Diocese of Québec was promoted as Archdiocese of Québec (lost territory to establish Apostolic Vicariate of Upper Canada)
1819.01.12Apostolic Vicariate of Upper Canada was established (from Diocese of Québec)
1826.01.27Apostolic Vicariate of Upper Canada was promoted as Diocese of Kingston
1829.08.11Diocese of Charlottetown was established (from Archdiocese of Québec)
1836.05.13Diocese of Montréal was established (from Archdiocese of Québec)
1841.12.17Diocese of Toronto was established (from Diocese of Kingston)
1842.02.15Apostolic Vicariate of Nova Scotia was promoted as Diocese of Halifax
1842.09.30Diocese of Saint John in America was established (from Diocese of Charlottetown)
1844.04.16Apostolic Vicariate of North-West was established (from Archdiocese of Québec)
1844.07.12Archdiocese of Québec was promoted as Metropolitan Archdiocese of Québec
1844.09.22Diocese of Arichat was established (from Diocese of Halifax)
1846.07.24Diocese of Vancouver Island was established (from Apostolic Vicariate of Oregon)
1847.06.04Apostolic Vicariate of Newfoundland was promoted as Diocese of Newfoundland
1847.06.04Apostolic Vicariate of North-West was promoted as Diocese of Saint-Boniface
1847.06.25Diocese of Bytown was established (from Diocese of Kingston)
1852.05.04Diocese of Halifax was promoted as Metropolitan Archdiocese of Halifax
1852.06.08Diocese of Saint-Hyacinthe was established (from Diocese of Montréal and Metropolitan Archdiocese of Québec)
1852.06.08Diocese of Trois-Rivières was established (from Metropolitan Archdiocese of Québec)
1855.02.21Diocese of London was established (from Diocese of Toronto)
1856.02.29Diocese of Hamilton was established (from Diocese of Toronto)
1856.02.29Diocese of Harbour Grace was established (from Diocese of Newfoundland)
1856.02.29Diocese of Newfoundland was renamed as Diocese of Saint John’s, Newfoundland (lost territory to establish Diocese of Harbour Grace)
1859.02.02Diocese of London was renamed as Diocese of Sandwich
1860.05.08Diocese of Chatham was established (from Diocese of Saint John in America)
1860.06.14Diocese of Bytown was renamed as Diocese of Ottawa
1862.04.08Apostolic Vicariate of Athabaska Mackenzie was established (from Diocese of Saint-Boniface)
1863.12.14Apostolic Vicariate of British Columbia was established (from Diocese of Vancouver Island)
1867.01.15Diocese of Saint-Germain de Rimouski was established (from Metropolitan Archdiocese of Québec)
1869.11.15Diocese of Sandwich was renamed as Diocese of London
1870.03.18Diocese of Toronto was promoted as Metropolitan Archdiocese of Toronto
1870.05.09Apostolic Prefecture of Western Newfoundland was established (from Diocese of Saint John’s, Newfoundland)
1870.09.16Apostolic Prefecture of Placentia was established (from Diocese of Saint John’s, Newfoundland and Diocese of Harbour Grace)
1871.09.22Diocese of Saint Albert was established (from Diocese of Saint-Boniface)
1871.09.22Diocese of Saint-Boniface was promoted as Metropolitan Archdiocese of Saint-Boniface (lost territory to establish Diocese of Saint Albert)
1874.01.25Apostolic Vicariate of Northern Canada was established (from Diocese of Kingston)
1874.08.28Diocese of Sherbrooke was established (from Metropolitan Archdiocese of Québec, Diocese of Saint-Hyacinthe and Diocese of Trois-Rivières)
1878.05.28Diocese of Chicoutimi was established (from Metropolitan Archdiocese of Québec)
1882.05.29Apostolic Prefecture of Golfe Saint-Laurent was established (from Diocese of Saint-Germain de Rimouski)
1882.07.11Diocese of Kingston lost territory to Diocese of Peterborough
1882.07.11Apostolic Vicariate of Northern Canada was promoted as Diocese of Peterborough (gained territory from Diocese of Kingston and Metropolitan Archdiocese of Toronto)
1882.07.11Apostolic Vicariate of Pontiac was established (from Diocese of Ottawa, Metropolitan Archdiocese of Saint-Boniface and Diocese of Trois-Rivières)
1882.07.11Metropolitan Archdiocese of Toronto lost territory to Diocese of Peterborough
1885.07.10Diocese of Nicolet was established (from Diocese of Trois-Rivières)
1886.06.08Diocese of Montréal was promoted as Metropolitan Archdiocese of Montréal
1886.06.08Diocese of Ottawa was promoted as Metropolitan Archdiocese of Ottawa
1886.08.23Diocese of Arichat was renamed as Diocese of Antigonish
1889Diocese of Saint Albert lost territory to Metropolitan Archdiocese of Saint-Boniface
1889.12.28Diocese of Kingston was promoted as Metropolitan Archdiocese of Kingston
1890.01.21Diocese of Alexandria in Ontario was established (from Metropolitan Archdiocese of Kingston)
1890.09.02Apostolic Vicariate of British Columbia was promoted as Diocese of New Westminster
1891Apostolic Prefecture of Placentia was suppressed (to Diocese of Saint John’s, Newfoundland)
1891.06.04Apostolic Vicariate of Saskatchewan was established (from Metropolitan Archdiocese of Saint-Boniface)
1892.04.05Diocese of Valleyfield was established (from Metropolitan Archdiocese of Montréal)
1892.04.28Apostolic Prefecture of Western Newfoundland was promoted as Apostolic Vicariate of Western Newfoundland
1894Diocese of Vancouver Island lost territory to Metropolitan Archdiocese of Oregon City
1898.05.04Apostolic Vicariate of Pontiac was promoted as Diocese of Pembroke
1901.07.03Apostolic Vicariate of Athabaska Mackenzie was renamed as Apostolic Vicariate of Athabaska (lost territory to establish Apostolic Vicariate of Mackenzie)
1901.07.03Apostolic Vicariate of Mackenzie was established (from Apostolic Vicariate of Athabaska Mackenzie)
1903.06.19Diocese of Vancouver Island was promoted as Archdiocese of Vancouver Island
1904.01.27Diocese of Joliette was established (from Metropolitan Archdiocese of Montréal)
1904.02.08Diocese of Saint John’s, Newfoundland was promoted as Metropolitan Archdiocese of Saint John’s, Newfoundland
1904.02.18Apostolic Vicariate of Western Newfoundland was promoted as Diocese of Saint George’s
1904.09.06Archdiocese of Vancouver Island was renamed as Archdiocese of Victoria
1904.09.16Diocese of Sault Sainte Marie was established (from Diocese of Peterborough)
1905.09.12Apostolic Prefecture of Golfe Saint-Laurent was promoted as Apostolic Vicariate of Golfe Saint-Laurent
1907.12.02Apostolic Vicariate of Saskatchewan was promoted as Diocese of Prince-Albert
1908.03.09Apostolic Prefecture of Yukon–Prince Rupert was established (from Apostolic Vicariate of Mackenzie)
1908.09.19Diocese of New Westminster was promoted as Metropolitan Archdiocese of Vancouver
1908.09.21Apostolic Vicariate of Temiskaming was established (from Diocese of Pembroke)
1908.10.01Archdiocese of Victoria was demoted as Diocese of Victoria
1910.03.04Apostolic Vicariate of Keewatin was established (from Diocese of Prince-Albert)
1910.03.04Diocese of Regina was established (from Metropolitan Archdiocese of Saint-Boniface)
1912.06.15Apostolic Exarchate of Canada (Ukrainian Rite) was established
1912.11.30Diocese of Calgary was established (from Diocese of Saint Albert)
1912.11.30Diocese of Saint Albert was promoted as Metropolitan Archdiocese of Edmonton (lost territory to establish Diocese of Calgary)
1913.04.21Diocese of Mont-Laurier was established (from Metropolitan Archdiocese of Ottawa)
1915.12.04Diocese of Regina was promoted as Metropolitan Archdiocese of Regina
1915.12.04Archdiocese of Winnipeg was established (from Metropolitan Archdiocese of Saint-Boniface)
1915.12.31Apostolic Vicariate of Temiskaming was promoted as Diocese of Haileybury
1916.11.20Apostolic Prefecture of Yukon–Prince Rupert was promoted as Apostolic Vicariate of Yukon–Prince Rupert
1918.04.18Apostolic Prefecture of Northern Ontario was established (from Diocese of Haileybury)
1920.11.17Apostolic Prefecture of Northern Ontario was promoted as Apostolic Vicariate of Northern Ontario
1921.04.30Diocese of Prince-Albert was renamed as Diocese of Prince-Albert–Saskatoon
1921.05.06Territorial Abbacy of Saint Peter–Muenster was established (from Diocese of Prince-Albert–Saskatoon)
1922.05.05Diocese of Gaspé was established (from Diocese of Saint-Germain de Rimouski)
1924.11.15Diocese of Saint John in America was renamed as Diocese of Saint John, New Brunswick
1925.07.15Apostolic Prefecture of Baie d’Hudson was established (from Apostolic Vicariate of Keewatin)
1927.03.15Apostolic Vicariate of Athabaska was renamed as Apostolic Vicariate of Grouard
1930.01.31Diocese of Gravelbourg was established (from Metropolitan Archdiocese of Regina)
1931.12.21Apostolic Prefecture of Baie d’Hudson was promoted as Apostolic Vicariate of Baie d’Hudson
1933.06.09Apostolic Vicariate of Keewatin lost territory to Diocese of Prince-Albert
1933.06.09Diocese of Prince-Albert–Saskatoon was renamed as Diocese of Prince-Albert (gained territory from Apostolic Vicariate of Keewatin, and lost territory to establish Diocese of Saskatoon)
1933.06.09Diocese of Saint-Jean-de-Québec was established (from Metropolitan Archdiocese of Montréal)
1933.06.09Diocese of Saskatoon was established (from Diocese of Prince-Albert–Saskatoon)
1936.02.22Metropolitan Archdiocese of Moncton was established (from Diocese of Chatham and Diocese of Saint John, New Brunswick)
1936.02.22Diocese of Nelson was established (from Metropolitan Archdiocese of Vancouver)
1938.03.13Diocese of Chatham was renamed as Diocese of Bathurst
1938.12.03Diocese of Amos was established (from Diocese of Haileybury)
1938.12.03Apostolic Vicariate of Baie de James was established (from Apostolic Vicariate of Northern Ontario and Diocese of Haileybury)
1938.12.03Apostolic Vicariate of Northern Ontario was promoted as Diocese of Hearst (lost territory to establish Apostolic Vicariate of Baie de James)
1938.12.10Diocese of Haileybury was renamed as Diocese of Timmins
1944.01.14Apostolic Vicariate of Prince Rupert was established (from Apostolic Vicariate of Yukon–Prince Rupert)
1944.01.14Apostolic Vicariate of Yukon–Prince Rupert was renamed as Apostolic Vicariate of Whitehorse (lost territory to establish Apostolic Vicariate of Prince Rupert)
1944.12.16Diocese of Edmundston was established (from Diocese of Bathurst)
1945.07.13Apostolic Vicariate of Labrador was established (from Apostolic Vicariate of Golfe Saint-Laurent, Apostolic Vicariate of Baie d’Hudson and Diocese of Harbour Grace)
1945.11.24Apostolic Vicariate of Golfe Saint-Laurent was promoted as Diocese of Golfe Saint-Laurent
1945.12.22Diocese of Kamloops was established (from Metropolitan Archdiocese of Vancouver)
1946Diocese of Charlottetown lost territory to Diocese of Gaspé
1946.02.09Diocese of Saint-Germain de Rimouski was promoted as Metropolitan Archdiocese of Rimouski
1948.01.19Apostolic Exarchate of Canada (Ukrainian Rite) was renamed as Apostolic Exarchate of Central Canada (lost territory to establish Apostolic Exarchate of Western Canada and Apostolic Exarchate of Eastern Canada)
1948.01.19Apostolic Exarchate of Eastern Canada (Ukrainian Rite) was established (from Apostolic Exarchate of Canada)
1948.01.19Apostolic Exarchate of Western Canada (Ukrainian Rite) was established (from Apostolic Exarchate of Canada)
1948.07.17Diocese of Saint-Paul was established (from Metropolitan Archdiocese of Edmonton)
1951.02.17Military Vicariate of Canada was established
1951.03.02Diocese of Sherbrooke was promoted as Metropolitan Archdiocese of Sherbrooke
1951.03.10Apostolic Exarchate of Western Canada (Ukrainian Rite) was renamed as Apostolic Exarchate of Edmonton
1951.03.10Apostolic Exarchate of Central Canada (Ukrainian Rite) was renamed as Apostolic Exarchate of Manitoba (lost territory to establish Apostolic Exarchate of Saskatoon)
1951.03.10Apostolic Exarchate of Saskatoon (Ukrainian Rite) was established (from Apostolic Exarchate of Central Canada)
1951.03.10Apostolic Exarchate of Eastern Canada (Ukrainian Rite) was renamed as Apostolic Exarchate of Toronto
1951.06.23Diocese of Saint-Jérôme was established (from Metropolitan Archdiocese of Montréal, Metropolitan Archdiocese of Ottawa and Diocese of Mont-Laurier)
1951.06.23Diocese of Sainte-Anne-de-la-Pocatière was established (from Metropolitan Archdiocese of Québec)
1952.04.29Diocese of Fort William was established (from Metropolitan Archdiocese of Saint-Boniface and Diocese of Sault Sainte Marie)
1953.07.06Diocese of Yarmouth was established (from Metropolitan Archdiocese of Halifax)
1956.11.03Apostolic Exarchate of Edmonton (Ukrainian Rite) was promoted as Diocese of Edmonton
1956.11.03Apostolic Exarchate of Saskatoon (Ukrainian Rite) was promoted as Diocese of Saskatoon
1956.11.03Apostolic Exarchate of Toronto (Ukrainian Rite) was promoted as Diocese of Toronto
1956.11.03Apostolic Exarchate of Manitoba (Ukrainian Rite) was promoted as Metropolitan Archdiocese of Winnipeg
1958.02.22Diocese of Harbour Grace was renamed as Diocese of Harbour Grace–Grand Falls
1958.11.22Diocese of Saint Catharines was established (from Metropolitan Archdiocese of Toronto and Diocese of Hamilton)
1959Diocese of Bathurst lost territory to Diocese of Saint John, New Brunswick
1960.02.29Diocese of Golfe Saint-Laurent was renamed as Diocese of Hauterive
1963.04.27Diocese of Hull was established (from Metropolitan Archdiocese of Ottawa)
1964.10.30Diocese of Harbour Grace–Grand Falls was renamed as Diocese of Grand Falls
1967.07.13Apostolic Vicariate of Baie d’Hudson was promoted as Diocese of Churchill
1967.07.13Apostolic Vicariate of Grouard was promoted as Metropolitan Archdiocese of Grouard–McLennan
1967.07.13Apostolic Vicariate of Keewatin was promoted as Metropolitan Archdiocese of Keewatin–Le Pas
1967.07.13Apostolic Vicariate of Labrador was promoted as Diocese of Labrador–Schefferville
1967.07.13Apostolic Vicariate of Mackenzie was promoted as Diocese of MacKenzie–Fort Smith
1967.07.13Apostolic Vicariate of Baie de James was promoted as Diocese of Moosonee
1967.07.13Apostolic Vicariate of Prince Rupert was promoted as Diocese of Prince George
1967.07.13Apostolic Vicariate of Whitehorse was promoted as Diocese of Whitehorse
1968.01.29Diocese of Churchill was renamed as Diocese of Churchill–Baie d’Hudson
1970.02.26Diocese of Fort William was renamed as Diocese of Thunder Bay
1973.11.29Diocese of Rouyn-Noranda was established (from Diocese of Timmins)
1974.06.27Diocese of New Westminster (Ukrainian Rite) was established (from Diocese of Edmonton)
1976.09.17Diocese of Alexandria in Ontario was renamed as Diocese of Alexandria–Cornwall
1980.10.13Diocese of Saint-Sauveur de Montréal (Greek-Melkite Rite) was established
1980.10.13Diocese of Saints Cyril and Methodius of Toronto (Slovak Rite) was established
1981.07.03Apostolic Exarchate of United States of America and Canada (Armenian Rite) was established
1982.01.11Apostolic Exarchate of United States of America (Romanian Rite) was established
1982.02.27Diocese of Saint-Jean-de-Québec was renamed as Diocese of Saint-Jean–Longueuil
1982.03.01Diocese of Hull was renamed as Diocese of Gatineau–Hull
1982.08.27Diocese of Saint-Maron de Montréal (Maronite Rite) was established
1986.07.14Diocese of Hauterive was renamed as Diocese of Baie-Comeau
1986.07.21Military Vicariate of Canada was promoted as Military Ordinariate of Military Ordinariate of Canada
1987.03.26Apostolic Exarchate of United States of America (Romanian Rite) was promoted as Diocese of Saint George’s in Canton
1987.04.27Diocese of Labrador–Schefferville was renamed as Diocese of Labrador City–Schefferville
1990.10.31Diocese of Gatineau–Hull was promoted as Metropolitan Archdiocese of Gatineau–Hull
1998.09.14Diocese of Gravelbourg was suppressed (to Metropolitan Archdiocese of Regina and Diocese of Saskatoon)
1998.09.14Metropolitan Archdiocese of Regina lost territory to Diocese of Saskatoon
1998.09.14Territorial Abbacy of Saint Peter–Muenster was suppressed (to Diocese of Saskatoon)
2005.09.12Apostolic Exarchate of United States of America and Canada (Armenian Rite) was promoted as Diocese of Our Lady of Nareg in New York
2005.10.28Metropolitan Archdiocese of Gatineau–Hull was renamed as Metropolitan Archdiocese of Gatineau
2007.05.31Diocese of Amos lost territory to Diocese of Chicoutimi, Diocese of Joliette and Diocese of Trois-Rivières
2007.05.31Diocese of Saint George’s was renamed as Diocese of Corner Brook and Labrador (gained territory from the suppressed Diocese of Labrador City–Schefferville)
2007.05.31Diocese of Labrador City–Schefferville was suppressed (to Diocese of Amos, Diocese of Baie-Comeau and Diocese of Corner Brook and Labrador)
2007.05.31Diocese of Moosonee lost territory to Diocese of Amos
2008.11.11Diocese of Bathurst lost territory to Diocese of Saint John, New Brunswick
2009.10.22Metropolitan Archdiocese of Halifax was renamed as Metropolitan Archdiocese of Halifax–Yarmouth (gained territory from the suppressed Diocese of Yarmouth)
2009.10.22Diocese of Yarmouth was suppressed (to Metropolitan Archdiocese of Halifax–Yarmouth)
2010.07.14Apostolic Exarchate of United States of America (Syro-Malankar Rite) was established
2011.06.10Diocese of Mar Addai of Toronto (Chaldean Rite) was established
2012.01.01Personal Ordinariate of The Chair of Saint Peter (Anglican Rite) was established
2014.12.29Diocese of Our Lady of Nareg in New York (Armenian Rite) was renamed as Diocese of Our Lady of Nareg in Glendale
2015.08.06Apostolic Exarchate of Canada (Syro-Malabar Rite) was established
2016.01.04Apostolic Exarchate of United States of America (Syro-Malankar Rite) was promoted as Diocese of Saint Mary, Queen of Peace, of the United States of America and Canada
2016.01.07Apostolic Exarchate of Canada (Syriac Rite) was established (from Diocese of Our Lady of Deliverance of Newark)

as of 2017.10.07

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