 Bishop Faraud and later Bishop Grouard were assisted by Isidore Clut, O.M.I.who was appointed Auxiliary Bishop on August 3, 1864 and who served until his death on July 9, 1903.On July 3, 1901, the territory of the Vicariate was split, remaining as the Apostolic Vicariate of Athabaska, which comprised what is today the northwestern area of the Province of Alberta, but losing the then Apostolic Vicariate of Mackenzie, which comprised what today is the Northwest Territories as well as northeastern area of the Province of Alberta.