James P. Mulvihill OMI Bishop James Mulvihill OMI became the second Vicar Apostolic of the Roman Catholic Vicariate Apostolic of Whitehorse in December 1965. Under his leadership, the Vicariate became a Diocese in mid-July 1967.((“History of the Diocese.” Roman Catholic Diocese of Whitehorse. 2020 website: http://www.whitehorsediocese.ca/history-of-diocese.html))