Emperor Kōmei
Prince Arisugawa Taruhito was born in Kyoto in 1835, as the son of Prince Arisugawa Takahito by Yūko (d. 1841), the eldest daughter of Saeki Yūjō. He was adopted by Emperor Ninkō as a potential heir to the throne, thus making Taruhito the adopted brother of Osahito Shinnō (the future Emperor Kōmei). Arisugawa was a close advisor to both Emperor Kōmei and his nephew by adoption, Emperor Meiji.