Who dated Kojijū?

Kojijū (小侍従; 1121–1202 CE) (also Matsuyoi no Kojijū) was a waka poet and Japanese noblewoman active in the late Heian period.

Her father was Ki no Mitsukiyo, and her mother was the poet Hanazono Sadaijinke no Kodaishin.

As a lady-in-waiting, she served the twice-empress Fujiwara no Tashi (who was wife, successively, to Emperor Konoe and Emperor Nijō), as well as in the court of the retired Emperor Takakura. Additionally, she took part in poetry contests organized by Emperor Go-Toba. During this time, courtiers were expected to be skilled poets, and a great deal of court life involved composing and exchanging poetry, as well as participating in poetry contests. Kojijū is designated a member of the Female Thirty-Six Immortals of Poetry (女房三十六歌仙, Nyōbō Sanjūrokkasen). She left a private collection of poems titled the Kojijū-shū.

Contemporaries noted her for her especial skill in composing poems that exactly suited the situation, particularly when writing a verse as a response to someone else's verse.

In 1179, she became a Buddhist nun.

L'empereur Go-Shirakawa (後白河天皇, Go-Shirakawa Tennō, 18 octobre 1127 - 26 avril 1192) est le 77^e empereur du Japon, selon l'ordre traditionnel de succession. Il a régné du 23 août 1155 au 5 septembre 1158, pour prendre ensuite le statut d'empereur retiré jusqu'à son décès en 1192.

Son nom personnel est Masahito (雅仁). Son nom posthume lui a été donné en mémoire de l'empereur Shirakawa (le préfixe Go- (後), signifiant « postérieur », soit « Shirakawa II »).