Empress Kōken in the context of "Wake no Kiyomaro"

Empress Genmei (元明天皇, Genmei-tennō; April 20, 660 – December 29, 721), also known as Empress Genmyō, was the 43rd monarch of Japan, according to the traditional order of succession. Genmei's reign spanned the years 707 through 715. She established the capital at Heijō-kyō in 710, marking the beginning of the Nara period.

In the history of Japan, Genmei was the fourth of eight women to take on the role of empress regnant. The three female monarchs before Genmei were Suiko, Kōgyoku/Saimei, and Jitō. The four women sovereigns reigning after Genmei were Genshō, Kōken/Shōtoku, Meishō, and Go-Sakuramachi.

Dōkyō (道鏡; 700 – May 13, 772) was a Japanese monk who rose to power through the favor of Empress Kōken (Empress Shōtoku) and became a Daijō-daijin Zenji, the rank set up for him, and later became a Hōō, the highest rank of the religious world.

He served Ryoben at Tōdai-ji. He was favored by retired empress Kōken for nursing her and healing her illness. After the Fujiwara no Nakamaro Rebellion, Kōken came to the throne again as Empress Shōtoku, and Dōkyō became Daijō-daijin and then Hōō, and wielded great power. He also attempted to take advantage of the oracle of Usa Hachiman to assume the position of emperor, but was blocked by Wake no Kiyomaro. He lost his position after the death of Empress Shōtoku and was sent to Shimotsuke Yakushi-ji.

Empress Genshō (元正天皇, Genshō-tennō; 680 – May 22, 748) was the 44th monarch of Japan, according to the traditional order of succession. Her reign spanned the years 715 through 724.

Genshō was the fifth of eight women to take on the role of empress regnant, and the only one in the history of Japan to have inherited her title from another empress regnant rather than from a male predecessor. The four female monarchs before Genshō were Suiko, Kōgyoku, Jitō and Genmei; the three reigning after her were Kōken, Meishō, and Go-Sakuramachi.

Okiko (Japanese: 興子), posthumously honored as Empress Meishō (明正天皇, Meishō-tennō; January 9, 1624 – December 4, 1696), was the 109th monarch of Japan, according to the traditional order of succession. Her reign lasted from 1629 to 1643. Her reign officially began when she was five years old and continued for fifteen years. It is believed that Meishō's father actually ruled in her name until she abdicated in favor of her younger half-brother.

In the history of Japan, Meishō was the seventh of eight women to become empress regnant. The six who reigned before her were Suiko, Kōgyoku/Saimei, Jitō, Genmei, Genshō, and Kōken/Shōtoku. Her sole female successor was Go-Sakuramachi.

The Fujiwara no Nakamaro Rebellion (藤原仲麻呂の乱, fujiwara no nakamaro no ran), also known as the Emi Rebellion, was a short-lived and unsuccessful Nara period military confrontation in Japan resulting from a power struggle between former Empress Kōken and the main political figure of the time, Fujiwara no Nakamaro from the powerful Fujiwara clan.

Through the support of Emperor Shōmu and Empress Kōmyō, with whom he had family-ties, Nakamaro rapidly climbed the career ladder during the 740s and 750s achieving some of the highest ranks and court positions. During the early years of the reign of Emperor Junnin, whom he supported, Nakamaro ruled the country de facto. Following the death of Kōmyō in 760, the retired Empress Kōken started to take government affairs into her hand resulting in a conflict between Nakamaro/Junnin on one side and Kōken and her close associate Dōkyō on the other.

Tachibana no Naramaro (橘奈良麻呂; 721–757) was a Japanese aristocrat (kuge), courtier, and statesman of the Nara period. He was the son of sadaijin Tachibana no Moroe and the second head of the Tachibana clan. He attained the court rank of shō shi-i no ge (正四位下) and the position of sangi, and posthumously of shō ichi-i (正一位) and daijō-daijin.

He was the leader of a plot to replace Fujiwara no Nakamaro and to overthrow Empress Kōken (Tachibana no Naramaro's Conspiracy). It was not successful.

Tenpyō-hōji (天平宝字) was a Japanese era name (年号, nengō; lit. "year name") after Tenpyō-shōhō and before Tenpyō-jingo. This period spanned the years from August 757 through January 765. The reigning Emperor was Junnin-tennō (淳仁天皇), who was a mere figurehead while authority was in the hands of Fujiwara no Nakamaro and during the later years of the era increasingly with retired Empress Kōken and the monk Dōkyō.

Tachibana no Moroe (橘 諸兄; 684-757) was a Japanese Imperial prince and official in the court of Emperor Shōmu and Empress Kōken.

He was the father of Tachibana no Naramaro .