Archdiocese of Ottawa–Cornwall

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The Archdiocese of Ottawa–Cornwall, a metropolitan archdiocese of the Latin Rite, is an active particular church in eastern Ontario, Canada. Erected on 8 May 1847 by Pope Pius IX as the Diocese of Bytown from the Diocese of Kingston, it was renamed the Diocese of Ottawa in 1851, elevated to a metropolitan archdiocese in 1886, and renamed Ottawa–Cornwall in 2020 following the suppression of the Diocese of Alexandria-Cornwall. Led by Archbishop Marcel Damphousse since 2019, it oversees approximately 433,000 Catholics in 112 parishes and serves as metropolitan see for the Ecclesiastical Province of Ottawa–Cornwall, highlighted by its historic Notre-Dame Cathedral Basilica, designated a minor basilica in 1998.[1][2] Stored in Cargo: Archdiocese of Ottawa–Cornwall

Diocese: Archdiocese of Ottawa–Cornwall
Status:Active
Rite:Latin
Type:Archdiocese
Ecclesiastical Province:Province of Ottawa–Cornwall
Suffragan Dioceses:Diocese of HearstDiocese of PembrokeDiocese of Timmins
Country:Canada
Region:Ontario
Bishop:Marcel Damphousse
Website:https://archott-cornwall.ca/
Newspaper:https://archott-cornwall.ca/nouvelles/
Catholic %:15.0%
Elementary Schools:87
High Schools:17
Deaneries:12
Priests:283
Existence:1847–
Predecessor Dioceses:Diocese of Kingston (Ontario)
Catholic Hospitals:5
Rating:3.5
Chancery Address:145 Saint Patrick Street

Ottawa, ON K1N 5K1

Canada

Establishment

The Archdiocese of Ottawa–Cornwall traces its origins to the Diocese of Bytown, canonically erected on 8 May 1847 by Pope Pius IX through the apostolic constitution Ad dominici gregis curam, carved from the territory of the Diocese of Kingston. This establishment addressed the rapid growth of the Catholic population in the Ottawa Valley amid 19th-century immigration and missionary expansion by the Oblates of Mary Immaculate. The see was renamed the Diocese of Ottawa on 8 May 1851, elevated to the Archdiocese of Ottawa on 8 June 1886, and further renamed the Archdiocese of Ottawa–Cornwall on 11 January 2020 after Pope Pope Francis suppressed the Diocese of Alexandria-Cornwall and united its territory in persona episcopi.[3][4]

History

Early Development

Under its first bishop, Joseph Bruno Guigues, O.M.I., the diocese expanded rapidly, constructing schools, hospitals, and churches to serve Irish, French-Canadian, and Indigenous communities. The archdiocese played a key role in Catholic education and healthcare in the Ottawa Valley during the 19th century.

20th Century and Elevation

Elevated to archdiocese status in 1886, Ottawa became the metropolitan see for suffragans including Kingston, Peterborough, and later others. Boundary adjustments occurred periodically, such as the creation of the Diocese of Timmins in 1938.

Recent Merger

On 11 January 2020, the Diocese of Alexandria-Cornwall was suppressed, with its territory (Stormont, Dundas, Glengarry, and Prescott–Russell regions) incorporated into Ottawa, prompting the name change to reflect the expanded jurisdiction.[5]

Geography

The archdiocese encompasses the National Capital Region (City of Ottawa and Russell Township), the United Counties of Prescott and Russell, the United Counties of Stormont, Dundas and Glengarry, and the Akwesasne Mohawk Territory. It covers approximately 15,200 square kilometres in eastern Ontario along the Ottawa and St. Lawrence Rivers. As metropolitan, it oversees the Ecclesiastical Province of Ottawa–Cornwall.[6]

Mother church

Notre-Dame Cathedral Basilica in Ottawa serves as the mother church. Completed in 1846 in Gothic Revival style and designated a minor basilica by Pope John Paul II on 14 November 1998, it features stunning stained glass and hosts major liturgical events.[7]

Leadership

Current Archbishop

Marcel Damphousse has served as archbishop since 4 October 2019. Ordained in 1986, he previously led the Diocese of Saginaw and emphasizes evangelization and family ministry.[8]

Auxiliary Bishops

There are no active auxiliary bishops as of 2024. Emeritus auxiliary Christian Ries, appointed in 2011, retired in 2019.[9]

Past Bishops

Name Tenure Notes
Joseph Bruno Guigues, O.M.I. 1847–1873 First bishop of Bytown; founded schools and hospitals.
Joseph-Eugène Brunault 1873–1886 Died in office.
Joseph Thomas Duhamel 1887–1909 First archbishop of Ottawa.
Charles Hugh Gauthier 1909–1922 Died in office.
Joseph Michel Gonzalve Dubois 1922–1923 Died in office.
Joseph-René Morin 1923–1941 Died in office.
Alexandre Vachon 1941–1953 Died in office.
Joseph-Aurèle Wilfrid Joncas 1953–1967 Resigned.
Jean-Marie Rodrigue Villeneuve, O.M.I. 1967–1982 Died in office.
Joseph Auné Plourde 1982–1994 Retired.
Marcel Gervais 1994–2007 Retired.
Terrence Thomas Prendergast, S.J. 2007–2019 Retired.

According to Catholic-Hierarchy.org and diocesan records.[10]

Theological and cultural orientation

The archdiocese rates as slightly conservative (3.5), with Traditional Latin Mass offered weekly in a few parishes amid broader Novus Ordo use; balanced emphasis on pro-life initiatives and social justice for immigrants/refugees; and leadership prioritizing synodality and doctrinal fidelity under Archbishop Damphousse.[11]

Statistics

The archdiocese spans 15,200 km² (5,868 sq mi), serving 433,425 Catholics (15% of 2.9 million total population) across 112 parishes and 12 deaneries, with 283 priests and 5 Catholic hospitals.[12]

Religious Communities

Oblates of Mary Immaculate

The Oblates of Mary Immaculate (O.M.I.), foundational to the archdiocese, continue mission work, retreats, and Indigenous ministry. Address: 725 Queen St., Ottawa.[13] Oblates

Jesuits

The Jesuits support spirituality centers and education at Campion College. Address: 1081 Main St., Ottawa.[14]

Parishes

Archdiocese of Ottawa–Cornwall

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No results The archdiocese includes 112 parishes organized into 12 deaneries, serving diverse English, French, and multicultural communities, including Maronite and Ukrainian Greek Catholic missions.[15]

Mission and services

Catholic Education

The archdiocese supports education through the Ottawa Catholic School Board (87 elementary, 17 high schools) and Conseil des écoles catholiques de langue française (95 schools).

School Name City Type Website
St. Patrick Adult High School Ottawa High School St. Patrick
Holy Family Elementary Ottawa Elementary Holy Family

[16]

Community Outreach

Catholic Christian Outreach of Ottawa provides youth programs and food banks, serving thousands annually through Development and Peace and local charities.[17]

Notable Events or Figures

  • Pope John Paul II visited Ottawa in 1984, celebrating Mass at the cathedral for 100,000 faithful.[18]
  • Bishop Guigues, O.M.I., known as the "Apostle of Bytown," built 60 churches and 20 schools in 25 years.
  • The archdiocese hosted the 1947 National Eucharistic Congress marking its centenary.

Fun facts

Below are some fun facts about the Archdiocese of Ottawa–Cornwall:


  • Did you know? Founded as the Diocese of Bytown in 1847 (Ottawa's original name!), it was the first diocese west of Kingston, kickstarting Catholic growth in Canada's capital region under missionary Oblates.
  • Surprise! Notre-Dame Cathedral Basilica, started in 1845, is one of Canada's oldest Gothic churches and became a minor basilica in 1998—its twin spires are an Ottawa skyline icon!
  • Here's something cool: First Bishop Joseph Guigues, O.M.I., a French missionary, built over 60 churches, 20 schools, and hospitals in just 25 years, earning him the title "Apostle of Bytown."
  • Wow moment: In 2020, the merger with Alexandria-Cornwall created the unique hyphenated name Ottawa–Cornwall, uniting urban Ottawa with rural St. Lawrence Valley farmlands.
  • Little-known gem: The archdiocese serves bilingual (English-French) communities and Akwesasne Indigenous territory, with Masses in multiple rites including Maronite.
  • Fun fact: Pope John Paul II's 1984 visit drew 100,000 to Ottawa for an open-air Mass—locals still share stories of the Holy Father's joy in the capital!
  • Did you know? Home to the Ottawa Catholic School Board, one of Canada's largest, educating 50,000+ students daily in faith-filled learning.
  • Surprise! The Oblates of Mary Immaculate, who founded the diocese, still run key missions and retreats, continuing their 175-year legacy of service.
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