There is also a story that Yoritomo built it as a token of his gratitude for Yasuyori's excellent conduct in 1190, when Yoritomo visited his father's (Yoshitomo's) mausoleum, however questions remain.
また、頼朝が父義朝の廟所に参拝した折（建久元年）、その奇特な行いを謝して設けた供養塔と言い伝えられているが、疑問点がある。