Halfdan 'The Valiant' HARALDSSON 
He had a biological son named Rurik II.
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Children
Rurik II HALFDANSSON
Rurik II was born about 0650 in Garderige, Novgorod Oblast, Russia. Rurik II is no longer alive.
Halfdan 'The Valiant' HARALDSSON Rurik II HALFDANSSON