Emperor Kōnin
Baekje and Silla sent their princes as hostages to the Yamato court in exchange for military support. King Muryeong of Baekje was born in Kyushu (筑紫) of Japan as the child of a hostage in 462, and left a son in Japan who was an ancestor of the minor-noble clan. According to the , Yamato no Fubito's relative (Takano no Niigasa) was a 10th-generation descendant of King Muryeong of Baekje who was chosen as a concubine for Emperor Kōnin and was the mother of Emperor Kanmu. In 2001, Emperor Akihito confirmed his ancient royal Korean heritage through Emperor Kanmu.