Danish Viking, who ruled over parts of Friesland between 841 and 873 was the uncle of a Viking leader who raided the British Isles, West Francia, Frisia, and Lotharingia in the 860s and 870?
Rodulf Haraldsson:  He was a son of Harald the Younger and thus a nephew of Rorik of Dorestad, and a relative of both Harald Klak and Godfrid Haraldsson, but he was "the black sheep of the family".
i don't know