Princess Reishi (1078–1144) was a Japanese Empress during the late Heian period. She was appointed honorary mother ("junbo") of her nephew Emperor Toba and served as empress during his reign. She held the title from 1108 through 1134.
Biography.
She was the daughter of Emperor Shirakawa and Fujiwara no Kenshi (1057–1084). Her father abdicated in favor of her brother in 1087. In 1107, her brother Emperor Horikawa died and was succeeded by her four-year-old nephew, Emperor Toba. She was appointed to serve ceremoniously as the empress of her nephew in 1108. 
In 1130, she ordained as a Buddhist nun.
Notes.
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