Trois Rivieres, L'herault/Pilon families

I need help locating information about the L'herault family who lived in Trois Rivieres Quebec in the early 1800's and farther back if possible. I have the following names:
Charles L'herault and Melanie Cloutier married in Trois Rivieres in 1839. They had children. I don't know all there names. I do know: Mary Florence, Mary Louise, and ??. Then in 1849 Melanie married Narcisse Des Alliers in Trois Rivieres. Had a son name Zephrin.
Melanie came to Oswego New York between 1866-1869. With children. I don't know if some stayed behind. Mary Louise married Anthony Pilon. Don't know if Mary and Anthony were married before they came to America. Mary Louise then married a John Baptise Pilon in 1898. Anthony died in 1893 in Oswego New York. Any help is appreciated.