Some believe that there was bad blood between Sanjo no kata and Shingen and that Sanjo no kata was a bad wife, because of the historical facts of a revolt by her son, Yoshinobu, and the inheritance of the position of family head by Katsuyori TAKEDA, who was a son of Suwa goryonin, a concubine from the Suwa family, as well as influences of works of fiction such as TV dramas and novels.
息子の義信の謀反、諏訪氏の出身の側室、諏訪御料人（諏訪御寮人）の子の武田勝頼が武田氏の家督を継いだ史実や、TVドラマや小説などの創作物の影響により信玄との不仲説や悪妻説などが流布。