However, it was incorrect to describe him as koin (descendent of emperors), and it was apparent as described in "a list of Kokin Wakashu" as 'OTOMO no Kuronushi Suguri' and in "Tendai-zasu-ki" (Archives of Tendai-zasu) Vol.1, Anne Oshofu (Genealogies of Anne Osho) as '(Shiga County) Dairyo (district head) Juhachiinojo (Junior Eighth Rank, Upper Grade) OTOMO no Suguri Kuronushi.'
しかし、皇裔とするのは誤りで、そのことは、『古今和歌集目録』に「大伴黒主村主」、また『天台座主記』第一巻安慧和尚譜に「（滋賀郡）大領従八位上大友村主黒主」とあることから明らかである。