William Ralston Shedden-Ralston was an English writer and linguist, mostly known as an expert on Russian life and popularizer of Russian folklore and literature. “The Water Snake” is a legend, entered in “Russian Fairy Tales, A Choice Collection of Muscovite Folklore". The narration is about one young girl, who once goes to bathe with the other girls and finds the water snake in her clothes after swim. The serpent tells her that he will creep away if the young girl would promise to marry him. Being so scared, she gives to the serpent a word… We present you the literature works of the author, whose creature had made Russian folk narratives becoming an integral part of European children’s literature and culture.