Yosinobu TSUKAGUCHI, a historian, insisted that he was the same person as Kudara no okimi who appeared in Sakyo Kobetsu (clans branched out from the Imperial Family) in "Shinsen Shojiroku" (Newly Compiled Register of Clan Names and Titles of Nobility); however, it does not seem to be certain.
歴史学者の塚口義信氏は、『新撰姓氏録』左京皇別に見える百済王(皇族)（百済親王）に同一人としているものの、確かとは思われない。