The Havelberg bishopric was set up again to Christianize the Wends. Brandenburg developed out of the Northern March founded in the territory of the Slavic Wends. The name "Wends" was a historical designation for Slavs living near Germanic settlement areas. It describes events related to northwest Slavic tribes known as the Wends up to 1171. Among them were the Obotrites and other tribes that Frankish sources referred to as "Wends". Helghe later warred in Wendland and killed the king of the Wends. It covers the relations between Saxons, Wends (West Slavs) and Danes (Vikings). Following the Ostsiedlung, the Slovincians like most of the other Wends gradually became Germanized. In the east the Danish Viking were active in raiding the Wends. It probably derives from the tribal name of the Wends. However, the crusade failed to achieve the conversion of most of the Wends. Until 1918 the grand duke was styled as "Prince of the Wends". See further in the Wikipedia articles King of the Goths and King of the Wends. The title "King of the Wends" is translated as "vandalorum rex" in Latin. Fredegar records the story of the "origo gentis" (origin of the people) of the Wends.