Seaport in Lower Saxony on the river Ems. The region between the rivers Ems and Weser was inhabited by the Chauci, who were partly displaced by Frisian expansion after about 500, and were later partially absorbed into the Frisian society. A Roman fleet under Drusus arrived in 12 BC. After the second century AD there is no mention of the Chauci. Saxons also settled the region and the East Frisian population of medieval times is based on a mixture of Frisian and Saxon elements. Nevertheless, the Frisian element is predominant in the coastal area, while the population of the higher Geest area expresses more Saxon influence.