The Otomo-suguri clan was Shoban (descendent of people from overseas) and it said 'he was the descendent of Kentei (the last emperor) of the Later Han Dynasty' in the Article of January, 838 of "Shoku Nihon Koki" (Later Chronicle of Japan Continued).
大友村主氏は諸蕃（渡来人の子孫）で、『続日本後紀』承和(日本)四年十二月条に「後漢献帝苗裔也」とある。