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In page Rurik:

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The name Rurik is a form of the Old Norse name Hrœrekr.[1] Rorik of Dorestad was a member of one of two competing families reported by the Frankish chroniclers as having ruled the nascent Danish kingdom at Hedeby. He may have been a nephew of king Harald Klak. He is mentioned as receiving lands in Friesland from Emperor Louis I. He plundered neighbouring lands: he took Dorestad in 850, attacked Hedeby in 857, and looted Bremen in 859, while his own lands were ravaged in his absence. The Emperor was enraged and stripped him of all his possessions in 860. After that, Rorik disappears from western sources for a considerable period of time. In 862, according to Russian sources, Rurik arrived in the eastern Baltic and built the fortress of Ladoga. Later he moved to Novgorod.[citation needed]