section_path: Western Europe/Frisia
section_name: Frisia
paragraph_text: Frisia
  
  Frisia was a region which spanned from around modern-day Bruges to the islands on the west coast of Jutland—including large parts of the Low Countries. This region was progressively brought under Frankish control (Frisian-Frankish wars), but the Christianization of the local population and cultural assimilation was a slow process. However, several Frisian towns, most notably Dorestad were raided by Vikings. Rorik of Dorestad was a famous Viking raider in Frisia. On Wieringen the Vikings most likely had a base of operations. Viking leaders took an active role in Frisian politics, such as Godfrid, Duke of Frisia, as well as Rorik.