"This post-mortem portrait was painted by Pierre Le Ber in 1700 immediately after Marguerite Bourgeoys' death. The work has been in the hands of the Congregation of Notre-Dame ever since and is currently exhibited at the Marguerite Bourgeoys Museum. During the 19th and early 20th centuries, the portrait was retouched several times, completely altering its appearance. The restoration of the painting in 1963-1964 revealed the true face of Marguerite Bourgeoys."

full story here:
http://www.ameriquefrancaise.org/en/article-385/True_Portrait_of_Marguerite_Bourgeoys.html