Schools Relations with: The Archdiocese of Ottawa–Cornwall (Latin: Archidioecesis Ottaviensis–Cornubiensis, French: L'Archidiocèse d'Ottawa-Cornwall) is a Catholic archdiocese in the Province of Ontario.

It was elevated to archdiocese status on 8 June 1886.

[1] The Archdiocese includes the City of Ottawa, the United Counties of Prescott and Russell, the eastern portion of the United Counties of Stormont, Dundas and Glengarry, as well as a small portion of Lanark County consisting of only two parishes.

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