This post, initially established by Tsunayoshi TOKUGAWA, was once abolished by Shigehide OGIWARA at his own discretion in the Genroku era (1688 - 17-4)), but was restored by Hakuseki ARAI.
はじめ徳川綱吉が設置し、元禄期に荻原重秀が独断で廃止してしまったが、新井白石が再度設置。