Some scholars say that rumors of Koremori's suicide were deliberately circulated to prevent a search for Taira soldiers by Yoritomo, and that Koremori, who was actually alive, traveled across the country, settled in Irokawa-go in Kii Province, and had two sons: Morihiro, who later named himself Shimizu, and Moriyiasu, who later named himself Mizuguchi, the ancestor of the Irokawa clan in the Sengoku period (Period of Warring States), although this story remains unproven.
また、維盛が入水したというのは頼朝の残党狩りから逃れる為の流言で、実は生き延びて各地を転々とし、最終的には紀伊国色川郷に落ち着き盛広・盛安の男子をもうけ、盛広は清水を名乗り、盛安は水口を名乗って戦国時代_(日本)の色川氏の祖となったと言うが、真実かどうかは不詳である。