In 1221's Jokyu War, he received word from his brother, Taneyoshi MIURA, who was a close advisor of the Emperor Gotoba, urging him to rise and take action; Yoshimura immediately notified Yoshitoki of this.
承久3年（1221年）の承久の乱では、後鳥羽天皇の近臣だった弟の三浦胤義から決起をうながす使者を送られるが、義村は直ちにこれを義時に知らせた。