Manufactured by Maurice Sauvage 1929-1930 (perhaps other years)
Calignac-Nérac (Lot-et-Garonne). Showroom at 83 Allée d'Albret, Nérac
Known models: 350cc Sport Type D2 Chaise, 500cc Chaise.
I am restoring a French built Myriam motorcycle and I saw that there is no information about the brand. So I hereby send you some of the documents I've found.
As far as I know, Myriam used exclusively Chaise engines. I suppose they were build by a local blacksmith who took Rhony X and Dollar as example.
Willem Belgraver, Veenhuizen (NL), vwbelgraver at gmail.com
Source: Correspondence. (NIT or elsewhere)