From the characteristics of the stone chamber and the excavated artifacts, the tumulus is estimated to be a tomb of a local leader who was a member of a powerful immigrant clan (the Yamatonoaya clan) between the end of sixth century and the early seventh century.
石室や出土品の特徴から、6世紀末から7世紀前半頃の渡来系の有力氏族（東漢氏）の首長の墓とみられている。