Hi there, I know you may not see this as it is three years after your post, but my family is also descended from Louis Allain. I have been unable to find any additional info on him. I do have the names of his wife, Marguerite Bourg's parents, Antoine Bourg and Antoinette Landry.

We are descended from Louis' son Pierre. Please let me know if there is any additional info you need or may have. Thanks!