At the early times of the Edo period, Ariyoshi CHIGUSA, the Dainagon (chief councilor of state) and the fourth son of Tomotaka IWAKURA, branched off his family and restored the Chigusa family by calling himself Chigusa.
江戸時代にいたり、大納言岩倉具堯の四男大納言千種有能が、分家して千種を称して家名を再興した。