Idéale seems to dominate post-war, but there are quite a few lesser-known brands around. "Brown" is one of the more common:
but there are plenty of others:
http://sport-vacances.shop.ebay.fr/Obje ... 86.c0.m282
Franceix, Régence, Lamplugh, Ecco, Excelsior, Etoile, Pullmann, and you sometimes see saddles branded with the name of the cycle manufacturer - Peugeot, Motobecane, etc.
Of course plenty of French bikes came with Reynolds frames and Brooks saddles.
Calmes dans le demi-jour
Que les branches hautes font,
Pénétrons bien notre amour
De ce silence profond.