FUJIWARA no Sanesuke, who inherited the enormous family territory of the house of Ononomiya, a major branch of the Northern House of the Fujiwara clan, was one of the most outstanding scholars during his period, and had intimate knowledge of traditional court customs.
藤原北家嫡流の小野宮流の膨大な家領を継ぎ、また有職故実に精通した当代一流の学識人であった。