Princess Sukeko (亮子内親王; 1147 – 27 April 1216), later Inpumon'in (殷富門院), was an Empress of Japan during the late Heian period. Sukeko was empress as the honorary mother (准母; "junbo") of her nephews Emperor Antoku and Emperor Go-Toba.
Biography.
She was the daughter of Emperor Go-Shirakawa and Lady-in-Waiting Fujiwara Shigeko, and the sister of Emperor Takakura. She was appointed Honorary Mother to her nephews, who reigned in succession as Emperor Antoku and Emperor Go-Toba. As their Honorary Mother, she was Honorary Empress and performed the court functions of the position of Empress during their reign. 
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