But during the reign on Emperor Ichijo, in 991, when Empress Dowager FUJIWARA no Senshi was tonsured, she had the good fortune to be given the title of Tosanjoin at the same time as she quit her palace position of empress dowager, and a "Nyoin" was born.
ところが一条天皇の代、正暦2年（991年）皇太后藤原詮子落飾の際、皇太后宮職を停めると同時に、優詔あって東三条院の院号が贈られ、「女院」が出現したのである。