Emperor Anko is identified as King Ko of Wa (supposedly, Japan) among the Five Kings of Wa described in Chinese history books "So-jo" (Sung-shu in Chinese or the Book of Song) and "Ryo-jo" (Liang-shu in Chinese or the Book of Liang).
中国の『宋書』・『梁書』に記される「倭の五王」中の倭王興に比定されている。