Takashina no Takako (高階貴子, sometimes read Takashina no Kishi; died 996), also known as the mother of the Honorary Grand Minister (儀同三司母, Gidōsanshi no haha) or as Kō no Naishi (高内侍), was a Japanese waka poet of the mid-Heian period.
[1] By her husband Fujiwara no Michitaka, she was the mother of Takaie, Empress Teishi and Korechika, who was known as the Honorary Grand Minister (儀同三司, Gidōsanshi).
[2][3] She is accordingly frequently referred to as the mother of the Honorary Grand Minister.
[2][3] Five of her poems were included in imperial anthologies from the Shūi Wakashū onwards.
[1] The following poem by her was included as the 54th in the Ogura Hyakunin Isshu: 忘れじの行く末まではかたければ けふを限りの命ともがな[4] wasureji no yuku-sue made wa katakerebakyō o kagiri no inochi to mogana[5]You promise you'll never forget, but to the end of time is too long to ask.