I have made some progress in the last year....Louise Boisseau did marry Daniel Sauve in abt 1900 in Syracuse.. She had brothers Joseph, George and sister Sophie/Sophia..
Here is the info for her and her siblings:
Louise b NY 1880- died 1963 Syracuse(married and had 6 kids) Joseph b NY 1871- died 1910 Syracuse(no marriage or chidren) George b NY 1874- died 1953 Syracuse(married 2x + 4 kids) Sophia b NY 1870- died 1906 Syracuse(married + 8 kids)
Anyway,their parents are Joseph Boisseau & Harriet LeRoy. Joseph was born 5/2/1843 in Canada Per Death Cert.--He died 8/8/1911 in Syracuse...According to his death certificate his parents were Joseph Boisseau/Louise(no maiden name) of Canada. I'm guessing @ Montreal. He was a stonecutter by trade and daughter Sophie married the son of another stonecutter from Montreal by the name of George Lormand.
If you have any info or need more from me let me know.