31%RatingSave Gender Feminine Usage Old Norse (Anglicized) Meaning & History From the Old Norse Þrúðr meaning "strength". In Norse mythology this was the name of a daughter of Thor and Sif. Related NamesFamily Tree·Details RootþrúðrVariantÞrúðrOther Languages & CulturesÞrúður(Icelandic) Categories anglicizations, daughters, goddesses, isograms, mythology, strength