Empress Genmei
The name of "Tachibana" was bestowed on Agata-no-Inukai no Michiyo by Empress Genmei in 708. She was the wife of Prince Minu, a descendant of Emperor Bidatsu and mothered Princes Katsuragi and Sai. She later married Fujiwara no Fuhito and bore Kōmyōshi (Empress Kōmyō). In 736, Princes Katsuragi and Sai were given the surname "Tachibana", renouncing their imperial family membership. They became Tachibana no Moroe and Tachibana no Sai respectively.