"Kogen Bukan" (literally, the Directories of Bakufu Officialdom of the Minamoto clan of Omi Province; and this book relates the time of the last four generations of the Sasaki Rokkaku clan in the form of a diary) says that Hidenobu had a daughter and Ujisato ROKKAKU was born between the daughter and Yoshisato ROKKAKU.
ただし、『江源武鑑』によれば、秀信に娘がいたとしており、その娘と六角義郷の間に六角氏郷が生まれたという。