Yoritomo's father, MINAMOTO no Yoshitomo, had been betrayed by Tadamune OSADA under similar circumstances; it was said that Yoritomo was in a position which made him unable to forgive Kawada no Jiro.
頼朝の父・源義朝も同じような状況で長田忠致に裏切られて殺されており、頼朝の立場としては河田次郎が許せなかったのだと言われる。