Princess Kaoruko (馨子内親王, Kaoruko-naishinno, 1029–1093), also known as Saiin-no Kōgō (西院皇后), was an empress consort (chūgū) of her cousin Emperor Go-Sanjō of Japan.^[1]

You can help expand this article with text translated from the corresponding article in Japanese. (November 2011) Click [show] for important translation instructions. View a machine-translated version of the Japanese article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 3,701 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Japanese Wikipedia article at [[:ja:馨子内親王]]; see its history for attribution. You may also add the template {{Translated|ja|馨子内親王}} to the talk page. For more guidance, see Wikipedia:Translation.

She was the daughter of Emperor Go-Ichijō. She served as Saiin (priestess) from 1032 until 1036. She married her cousin the future emperor in 1051. In 1068, her husband became emperor. She had no children.

After the death of her husband, she became a Buddhist nun under the name Saiin-no Kōgō (西院皇后). ^[2]