The Shin clan originated from KI no Narimori who had been a member of the Ki clan, a powerful clan at the end of the Heian period; the Ki clan had had its base in West Hoki and the Shin clan was still powerful in West Hoki especially in Aimi County and Hino County for generations.
進氏は平安時代末期、西伯耆を中心に勢力を誇っていた紀氏、紀成盛を祖とする一族で代々、会見郡から日野郡にかけて権益を持っていた。