This is an answer to question 3, made CW because it follows up on Matt's comment:

<IMG SRC="https://ilorentz.org/beenakker/MO/Labarthe.png"/>

Screenshot from <A HREF="https://archive.org/stream/bibliothquedelac04back#page/n647/mode/2up">this bibliography of Jesuit authors.</A> There is also an entry on Lalouvère (spelled Loubere), which you can find <A HREF="https://archive.org/stream/bibliothquedelac05back#page/n23/mode/2up">here.</A>