Michael McBane the author of the blog "Ottawa Valley Irish: A family history weblog & genealogy database" has said that he is working on a book on the missionaries of the Ottawa Valley and the Pontiac on the Quebec side.
He provides a partial list of Roman Catholic Missionaries served the Pontiac County area in the mid-nineteenth century such as -
1836-1838 Rev Pascal Brunet, curé Montebello/Wm Cannon, vicaire à Bytown
1836-1838 F.L. de Bellefeuille, S.S. Montréal/J.B. Dupuis, Evêché Montréal
To see the rest of the list, go to http://www.ottawavalleyirish.com/2011/08/missionaries-of-pontiac-1836-1851.html#comments
The website is at http://www.ottawavalleyirish.com