Some clans including the Ishikawa clan (vassal of the Tokugawa clan), a daimyo (Japanese territorial lord) of the Edo period who are famous for Kazumasa ISHIKAWA, called themselves descendants of Yoshitoki, however it is not clear because there are many theories (as for the Ishikawa clan, persons of two generations are not confirmed).
石川数正が知られる近世大名の石川氏（徳川氏家臣）などがこの義時の末裔を称しているが諸説あって定かではない（約二代の人物が確認できないため）。