Toshiko (Japanese: 智子, 23 September 1740 – 24 December 1813), posthumously honored as Empress Go-Sakuramachi (後桜町天皇, Go-Sakuramachi-tennō) was the 117th monarch of Japan, according to the traditional order of succession.

[6] Toshiko was born into the Imperial family on 23 September 1740 she was the second daughter of Emperor Sakuramachi, and her mother was Nijō Ieko (二条 舎子).

[7] Toshiko had an older sister who died at a young age, and a brother named Toohito who became Emperor Momozono upon the death of their father in 1747.

[8] Toshiko's Imperial family lived with her in the dairi of the Heian Palace, her initial pre-accession title was Isa-no-miya (以茶宮) and later Ake-no-miya (緋宮).

Other events in Go-Sakuramachi's life included the founding of a merchant association handling Korean ginseng in the Kanda district of Edo.

Go-Sakuramachi consulted with the senior courtiers and imperial guards, and planned to accept Prince Sadayoshi of Fushimi-no-miya as an adopted son.

Morohito was the sixth son of Prince Kan'in-no-miya Sukehito (閑院宮典仁), and was supported by the Emperor's chief advisor (aka the Kampaku).

The largest event that took place before her death occurred in 1789, when she admonished Kōkaku for his role in a scandal involving his father's honorary title.

Also enshrined in this location are this empress's immediate Imperial predecessors since Emperor Go-Mizunoo – Meishō, Go-Kōmyō, Go-Sai, Reigen, Higashiyama, Nakamikado, Sakuramachi and Momozono, along with her four immediate successors – Go-Momozono, Kōkaku, Ninkō, and Kōmei.

The other five women to rule as empress with male heirs include: Suiko, Kōgyoku (Saimei), Jitō, Kōken (Shōtoku), and Meishō.