My pleasure. I live in Montreal which is close to Louiseville and once visiting there, I stopped in a store and purchased a book relating the history of Louiseville. It is in this book that I got a lot of informations on Jean
Jacquet de Gerlaise. Furthermore, since I read in French and
English, there is more information available on this subject for me, and like I've wrote, records are well conserved in Quebec.
Our ancestor is the first settler of louiseville and the
Desjarlais family and descendants lived there continuously from the first day of Louiseville (Formerly "Seigneurie de Manereuil" or "Mannereuil").
Do you read French? If so, I would suggest that you do a research on the web on the "Régiment Carignan-Salières" in the
La Fouille company.
Many think that the second name is
Jacques because in Quebec "Jean-Jacques" was once a popular first name, but
Jacquet was quite common in Liege at this time and normally he should have more a family name before "de Gerlaise" which is the land own by the family.
I hope this helps a bit more!