42%RatingSave Gender Masculine Usage Old Norse [1] Meaning & HistoryExpand Links Old Norse form of Haldor. Related NamesFamily Tree·Details Rootshallr + ÞórrFeminine FormHallþóraOther Languages & CulturesHalldór(Icelandic) Haldor, Halldor(Norwegian) Sources & References Viking Answer Lady Webpage, available from https://www.vikinganswerlady.com/ONNames.shtml.