By the Brothers Grimm. Bertie likes stories about frogs - no doubt that's because he is one himself. It seems that many of you do too, as the Maiden and the Frog is one of our most popular stories. This version by the Brothers Grimm is slightly more elevated: it involves no ordinary young maiden, but a princess, who like other princesses is sweet, but very particular about certain things, especially about not kissing frogs.