Biographical Information on Marguerite de Roberval (in English):

http://en.wikipedia.org/wiki/Marguerite_de_La_Rocque

http://www.biographi.ca/009004-119.01-f.php?&id_nbr=397

http://www.canadiangenealogy.net/heroines/marguerite_de_roberval.htm

http://dalejarvis.blogspot.com/2014/03/marguerite-de-roberval-and-isle-of.html

Et en français:

http://www.biographi.ca/fr/bio/la_roque_marguerite_de_1F.html

http://grandquebec.com/misteres-du-quebec/marguerite-roque/