In the early and medieval periods, magical and fantastic motifs occur abundantly in works whose overall plots do not fit into the Aarne-Thompson folktale typology. Thus, the hero of the Anglo-Saxon epic Beowulf (c. 700–1000 CE) defends a house against an ogre, whom he defeats by tearing his arm off; then he plunges down through a pool to an underwater Otherworld, where he kills the ogre’s mother.