J. H. Rosny, jeune, pseud. of S. J. F. Boëx

J.-H. Rosny jeune was the pseudonym of Séraphin Justin François Boex (July 21, 1859 – July 21, 1948), a French author of Belgian origin who, along with his better known older brother J.-H. Rosny aîné, is considered one of the founding figures of modern science fiction.