According to the Chronicles of Japan, the Hata clan originated with Yuzuki no kimi (described as Yuzuo in "Shinsen Shojiroku" (Newly compiled Register of Clan Names and Titles of Nobility)) who in 284 led people from 120 districts of Paekche in the Korean Peninsula to settle in Japan.
日本書紀によると応神天皇14年に弓月君（ゆづきのきみ：新撰姓氏録では融通王）が朝鮮半島の百済から百二十県の人を率いて帰化し秦氏の基となったという。