Onin Bukan(a book of heraldry in the Onin era) and Hagiwara-kafuan (proposed genealogical table of the Hagiwara family) also has a description to the effect that a son (Fujikage NAGAO) of Yorinari UESUGI was adopted by the Nagao clan as an heir.
応仁武鑑や萩原家譜案にも、上杉頼成の男子（長尾藤景）が長尾氏へ入嗣した旨が記されている。