Austrian-German painter and illustrator Maximilian Liebenwein, who was active in the late 19th and early 20 centuries, worked in an illustation style that feels in keeping with many of the other classic illustrators of that “Golden Age” of illustration. In particular, some of Liebenwein’s illustrations put me in mind of the Russian folk art influenced illustrations of Ivan Bilibin.
I couldn’t find very much of Leibenwein’s work on the web, but there’s enough to make looking worthwhile.