Hi Mary,
I just read the message you posted years ago about Guillaume and Francoise Hebert.
You probably already know this, but just in case ...
in 1999, Guillaume's ancestors wrote a 60 page booklet about his life to celebrate 300 years of Fournier ancestors in the Saint-Thomas de Montmagny area. (Quebec)
It is called Les Fournier D'Amerique - Tricentenaire du deces de Guillaume Fournier premier ancetre 1699-1999
National Library of Canada ISBN 2-9806505-0-1 Aout 1999
It details his life in Quebec and lists his children. The second part of the booklet talks about other Fourniers who arrived from France and settled in other areas.
This booklet was published by L'Association des Fournier d'Amerique and lists Armelle Fournier as the researcher.
You can also google L'Assocation des Fournier d'Amerique and look up a few things in English as well.
Bonne Chance
Diane