FUJIWARA no Sadaie: brought the treatise on waka poetry, which had been established by his father Toshinari, to its perfection, and composed the Shinkokin Wakashu (New Collection of Ancient and Modern Japanese Poetry) and the Shin Chokusen wakashu (New Imperial Anthology of Japanese Poetry), also regarded as one of the twin master poets of the Mikohidari family.
藤原定家・・父俊成が確立した歌論を大成し新古今和歌集・新勅撰和歌集を編んだ御子左家の双璧のひとり。