The Toki clan stems from the Settsu-Genji, the descendant of the Seiwa-Genji, whose ancestor was Emperor Seiwa, and mainly flourished in Mino Province as the main branch of the Mino-Genji clan.
清和天皇を祖とする清和源氏の一流　摂津源氏の流れを汲み、美濃源氏の嫡流として美濃国を中心に栄えた。