Eric

Eric was a Swedish monarch or local ruler who ruled over Birka, an important port town, and possibly Uppsala, an important early Swedish political center, and is mentioned as dead by 852. His existence is attested by the nearly contemporary account Vita Ansgari, written by the missionary Rimbert, who visited Sweden alongside Ansgar in c.  852. By the time of their visit, a king by the name Olof ruled, with Eric being deceased since a while.