Roux learned Latin with the parish priest and then obtained a scholarship to study in a Parisian college.
He supported the French Revolution and took the oath for the Civil Constitution of the Clergy, following which in 1791 he was named Episcopal Vicar of the Haute-Marne.
[1] Roux was Représentant en mission to Oise, Marne and Ardennes, where he zealously applied revolutionary policies.
Apart from his elected positions, in 1799 he worked at the Ministry of the Interior under Nicolas Marie Quinette and after 18th Brumaire he joined the Commission on Émigrés.
[1] His political career was briefly revived in 1815, during the Hundred Days, when he was appointed subprefect of Laon, but the Bourbon restoration saw him banished from France as a regicide in January 1816.