Sadaie, however, served the Kujo family as Keishi (household superintendent), was involved in many political operations and ceremonies of a court noble as an aide to Sekkan (regents and advisers), and mastered Yusoku-kojitsu (knowledge of court rules, ceremony, decorum and records of the past).
それでも定家は九条家に家司として仕えて摂関の側近として多くの公事の現場に立ち会って、有職故実を自己のものにしていった。