Claim: Åsmund Kåresson invented the Uppland runestone style; he listed himself as Ásmundr Kári's son on some of his work.
Evidence: Åsmund is the inventor of the classic Uppland runestone style with one or two animals (rundjur) showing their heads in profile. In addition, in two inscriptions, U 956 in Vedyxa and Gs 11 in Järvsta, Åsmund listed his patronym with the text osmuntr kara sun or "Ásmundr Kári's son."