Although the family occasionally aroused the suspicions of the Hojo clan, which held control over the shogunate government as they held the post of regent, the lineage was maintained for generation after generation because of their marital relations with the Hojo clan.
幕政を牛耳った執権北条氏から時折、警戒の念を抱かれつつ、代々、北条氏との縁戚関係を結ぶことで家系を保った。