 Its cathedral episcopal see is St. Josaphat's Cathedral in Edmonton, Alberta.On 19 January 1948, it was established as Ukrainian Catholic Apostolic Exarchate of Western Canada (an Eastern Catholic missionary pre-diocesan jurisdiction, akin to a Latin Apostlic Prefecture), on territory split off from the then Ukrainian Catholic Apostolic Exarchate of Canada.On 10 March 1951, it was renamed as Ukrainian Catholic Apostolic Exarchate of Edmonton, after its see.