89-year-old Yoshiaki MIURA (Yoshimori's grandfather) said 'By giving my life to buei (Yoritomo), I wish for the prosperity of my descendants' and stayed in the castle; he fought on his own but was killed (The Battle of the Kinugasa-jo Castle).
その際に、89歳の老齢の三浦義明（義盛の祖父）は「今、この老いた命を武衛（頼朝）に捧げて、子孫の繁栄をはからん」と言い、一人城に残って奮戦して討ち死にした（衣笠城合戦）。