François Barthélemy Arlès-Dufour was a French silk merchant and leading exponent of Saint-Simonianism. He was born to a poor family, had little formal education and began work in a shawl factory at the age of 16. Later he joined a silk company based in Leipzig, Germany, married into the owners' family and was placed in charge of its Lyon operations. Working first for his in-laws and then independently, he made a fortune in silk. Arlès-Dufour also became involved in banking, railways and the Suez canal project. He played an important role in the Lyon Chamber of Commerce, and as a member of the jury in various international expositions. He believed in free trade and in social institutions that would help the most disadvantaged social classes.

Barthélemy-Prosper Enfantin was a French social reformer, one of the founders of Saint-Simonianism. He was also a proponent of a Suez Canal.