Pierre de Villiers, II - Spurious ancestry?

I've cited Notice historique et généalogique sur la Maison de La Rochette en Auvergne, Velay, Forez, Vivarais, etc, Pierre-Marie d' Assier imprimerie de Louis Perrin, 1856, Pg 28 & 39. https://books.google.co.za/booksid=c3ubKiOTyfcC&pg=PA39&dq#...

on Paul and Jean de La Rochette's profiles. Presumably a trustworthy source?

Sorry, hopefully this URL will work:
https://books.google.co.za/books?id=c3ubKiOTyfcC&pg=PA39&dq...

And it's [Jeanne Rochet Catherine Murette] -(not Catherine Coppier de la Murette) who seems to be an incorrect wife for Paul de la Rochette.

Paul is recorded as having married "Jeanne de Parchas, fille de Marcellin" in 1645 and had 5 children with her. Even if Catherine Murette is a second marriage, the dates still don't work for Isabelle to have been his daughter.

The dates would look better for Isabelle to have been Paul's sister, ie a daughter of Jean de la Rochette & Catherine Coppier.....but she's not listed among their 10 children.

Thanks Ian, that's very helpful

We actually only know 2 things about Isabelle from her profile:

1. She married Pierre de Villiers "in the big Temple at La Rochelle on 10th April 1611".
2. Her birth-surname from this record is reported as "Rochet"

Were her parents named in this marriage record?
Where does the statement/idea that she was"of an old noble family of St. Jean d’Angely" come from? Monsieur de la Fosse, who found the record?...or MG Müller?
Is it anything more than a guess?

It doesn't seem like enough to connect her to any tree yet.

Absent any disagreement, I have cut this line until we get Sources to validate the parents.