白河天皇
He was the son of Fujiwara no Yorimichi and Fujiwara no Gishi (藤原 祇子, her real name is unknown today), a daughter of Fujiwara no Tanenari (藤原 種成), hence the grandson of Fujiwara no Michinaga. A contemporary document suggested he was the third born son, but this is uncertain. He was appointed to the positions of sadaijin, sessho and kampaku. He made his adopted daughter Kenshi (賢子) a consort of Emperor Shirakawa. Kenshi died when she was very young, but she left a son who would later ascend to the throne as Emperor Horikawa.