In 1935 he published Jours sans gloire [fr] at Éditions Gallimard for which he obtained the Prix Renaudot on 5 December 1935. On 15 December 1935, at a dinner at Drouant's house gathering the ten winners of the Renaudot Prize since 1926 (Charles Braibant, Philippe Hériat, Louis-Ferdinand Céline...), de Roux put forward the idea of publishing a collection of ten short stories by the winners, presented by each of the jurors. It was adopted. The volume was published in the following year. For Brune, it narrowly missed the 1938 Prix Goncourt, defeated in the fifth round by L'Araigne [fr] by Henri Troyat thanks to the double vote of the president of the jury, J.-H. Rosny aîné.[2]
The Éditions Robert Laffont succeeded in attracting François de Roux with Amours perdues in 1942 and L'Ombrageuse (in 1942 too).
^Daughter of Eugène Magne [fr] a member of Parliament for the Gard in the 1920s and Yvonne Blachère whose father Bernard Blachère was a member of Parliament for the Ardèche region in 1922.