The Ashikaga clan had an Okibumi left behind by MINAMOTO no Yoshiie, their ancestor, in the Heian period which was as follows: "I will be reincarnated as a seventh-generation descendant and reign over the whole country."
足利氏には、先祖に当たる平安時代の源義家が書き残したという、「自分は七代の子孫に生まれ変わって天下を取る」という内容の置文が存在する。