Have you read this post? http://www.ourdaoustfamily.com/GuillaumeDaoustOrigins.html
If we want to see the state of the research in 2009, one of us should read the MGSCF paper in French. It looks like I might have access to some years of the journal in Denver, but they're bound to be the wrong ones. Check your area here and let's see if we can find the 30-page paper and a volunteer to summarize its findings: http://www.worldcat.org/title/memoires-de-la-societe-genealogique-canadienne-francaise/oclc/2208362
* Roland-Yves Gagné, Nadine Gilbert et Laurent Kokanosky. ''Memoires de la Societe genealogique canadienne-francaise.'' Volume 60, cahier 259 pages 29-59.