Keijuin and her older brother Taneie's concern in politics had already started during the reign of Shogun Yoshiharu, which was recorded in "Hirojikiroku" (literally, records of announcements) and "Odachi Joko Nikki" (The Diary of Joko ODACHI).
既に義晴の将軍在位中より、兄・稙家とともに政務への関与を裏付ける記録が『披露事記録』や『大舘常興日記』に見られる。