Furthermore, as neither Yoritada nor Masanobu had any maternal relations with powerful imperial members who could succeed the throne, Kaneie could not remove them from politics by charging them for treason.
しかも、頼忠も雅信も皇位継承可能な有力皇族との外戚関係がなかったために、謀叛などの罪を着せて排斥することも出来なかった。