EntityQ504932· pop 22· linked from 92 articlesHalfdan the BlackSign in to saveninth-century king of VestfoldConnectionsOld NorseEntityHarald FairhairEntityYnglingEntityÅsa HaraldsdóttirEntityLatinEntityInternational Standard Book NumberEntitynobilityEntitySnorri SturlusonEntityVestfoldEntityOpplandEntityHedmarkEntityAgderEntityberserkerEntityHeimskringlaEntityAri ÞorgilssonEntityÍslendingabókEntitySigurd Snake-in-the-EyeEntityRandsfjordenEntityHistoria NorwegiæEntityFagrskinnaEntityCategories810s births860 deaths9th-century monarchs in Europe9th-century Norwegian monarchsNorwegian petty kingsPeople from VestfoldPlace of birth unknownPlace of death unknown