According to the article of 'Hata Clan', who accounted for about one-third of the-then naturalized people, King Kotobuo, the descendent of Kobuo, who was thirteen generations away from the first Qin Emperor in China, came to Japan from Paekche (an ancient Korean kingdom), taking with him as many as one-hundred twenty-seven prefectures of the Hata clan in the era of Emperor Chuai, and King Yudu in the era of Emperor Ojin.
諸蕃（渡来および帰化系氏族）のうち約3分の1の多数を占める「秦氏」の項によれば、中国・秦の始皇帝13世孫、孝武王の子孫にあたる功徳王が仲哀天皇の御代に、また融通王が応神天皇の御代に、127県の秦氏を引率して朝鮮半島の百済から帰化したという記録がある。