The Takanashi family having a blood relation with Yorisue INOUE of the Seiwa-Genji (Minamoto clan) was a local powerful family enjoying prosperity in the northern part of Shinano Province in the mid Heian period.
高梨氏は清和源氏井上氏頼季流の一族で、平安時代中期に信濃国北部に栄えた土豪である。