What I'll do to make looking at things easier for you is to start a Louvat family tree. Then I can post documents to each person and provide translations. I'll send you an invitation to it, once I get it going, that will give you complete access to it - you'll be able to edit and add to it even if you don't keep an Ancestry.com subscription.
Just thought I'd add the distances of the places mentioned as it always seems they're so far apart, but they're all very close.
From Les Echelles
to Entre-Deux-Guiers: 0.53 km
to Miribel: 3.73 km
to La Bauche: 4.85 km