Based on accounts by Jordanes, Procopius, Paul the Deacon and others; linguistic evidence (see Gothic language); placename evidence; and archaeological evidence, it is believed that the East Germanic tribes, the speakers of the East Germanic languages related to the North Germanic tribes, had migrated from Scandinavia into the area lying east of the Elbe.[5] In fact, the Scandinavian influence on Pomerania and today's northern Poland from period III[clarification needed] onwards was so considerable that this region is sometimes included in the Nordic Bronze Age culture (Dabrowski 1989:73).