This family name is originated from the fact that the clan sent Toneri people (valets) for Emperor Kinmei at the Shikishima no Kanasashi no miya (the palace for this emperor), existed in modern-day's Sakurai City, Nara Prefecture.
氏名の由来は欽明天皇の皇居磯城嶋金刺宮(奈良県桜井市)で、同天皇の舎人を出した。