Hello,
It's a long shot but my last name was Blanche. My father was Alfonso, grandmother Alma, and grandfather Gilberto. I don't know where in Mexico but I have 2 photos taken in a Guadalajara studio, dated in early 1900's. One photo seems to be of my grandmother's family when she was a teenager. In a death certificate of my aunt, Concepcion, my grandmother said her maiden name was Duval. I have been totally unable to find any info on my family beyond 1925. Hopefully, we have a connection.
Thanks - Nancy