was a Japanese waka poet of the mid-Heian period.
She was the daughter of Murasaki Shikibu and . Her given name was , although the kanji can also be read as Kenshi.
In 1017, she joined to the court and served as a lady-in-waiting for Grand Empress Dowager Shoshi, the mother of Emperor Go-Ichijo. She was married to and produced a son in 1038, and she had a daughter with in 1026. She also served as the nurse of Imperial Princess Teishi and Emperor Go-Reizei. When Emperor Go-Reizei ascended the throne, she was promoted.
Thirty-seven or thirty-eight of her poems were included in imperial anthologies from the Goshà «i Wakashà « onward.
One of her poems was included as the fifty-eighth in the Ogura Hyakunin Isshu:
She also produced a private collection called the .
Some scholars have attributed the final ten chapters of her mother's magnum opus, The Tale of Genji, to her.