I am trying to find a connection between Helene Dandurand and her husband Henri Francois Oligny of Troy, NY and my ggg-grandmother Marie Helene (Oligny) Toupin. I believe they were her parents but haven't found the direct link yet. Adelie Dandurand and El. Davignon were witnesses at my gg grandmother's wedding in 1869. I wonder if you ever came across any mention of them in your research and if your Dandurands and mine are related?
Have you looked at Saurette.com to see if your Dandurands are listed? I found some information on Helene Dandurand there.
I would appreciate any information you might share. I'm sorry I don't have much to offer other than what is in this email. Thank you.