Hotta no Ki, beginning of 9th century, end of 10th century, remains of Hotta no Ki, theories of Kawabe fu, Okachi no Ki, josaku unrecorded in documents, and second Ogaki no Ki
払田柵9世紀初頭10世紀末不明払田柵跡河辺府説、雄勝城説、史料未記録の城柵説、第2次雄勝城説