Since his oldest son Sukenobu SASAKI was said that he was not suited as his heir, and his second son Tokitsuna SASAKI died young, so his third son Sadamune SASAKI succeeded his post.
長男の佐々木祐信は意に叶わなかったとされ、次男の佐々木時綱は早世していた為、三男の佐々木貞宗が後を継いだ。