Your original post was a bit confusing [as it turned out]. You seemed to have "mixed" 2 different families....it happens...been there, done that!Also, Peter was never mentioned. May I ask the source of the info you DO have?
Nora died from the flu...no Stanley died NH of polio....no John/Nora had twins....no [they belong to the other John]
Have you requested a death cert for Loudia? It would appear she died before 1920.It would depend on when the family left ME for MA, as to where to continue your search. If finding her is of the utmost importance, also try the Catholic Diocese Essex MA and/or Androscoggin ME and/or check Immaculate Conception Cem [Stanley] and/or St Mary's Cem [Nora], providing she died in MA.
I don't have expertise with any name.If you use familysearch.org it will take care of all variants for surnames, as well as given names. Wish you well!