FUJIWARA no Michinaga handed down "Saiguki" (exemplary book on Heian rituals) through one of his wives MINAMOTO no Akiko written by MINAMOTO no Takaakira, the father of Akiko.
藤原道長は妻の1人である源明子を通じて、明子の父・源高明が著した『西宮記』を相伝した。