sticking with the Julien my Georgano lists
Julien (F) 1925-1926 G. Julien, Blois, Loire-et-Cher
The Julien was a minute single seater using a single-cylinder 2CV engine of under 200cc, and a two-speed gearbox
Juluien (F) 1946-49 Ste des Etudes Automobile M.A. Julien, Paris 16e
The post-war Julien was also a minicar, appearing at the same time as the Rovin, of which it was a rival. It used a 325cc single cylinder engine which drove the rear wheels by a single chain. An open two-seater was the only body style . In 1949 a new model with wider body was announced, but it did not go into production