The clan originated from the Naka clan, a branch family of the Kawanobe clan whose ancestor was FUJIWARA no Hidesato, Chinjufu-shogun (Commander-in-Chief of the Defense of the North).
家系は鎮守府将軍藤原秀郷を祖とする川野辺氏の支流　那珂氏を祖とす。