In the Battle of Sekigahara, the Kutsuki clan originally supported Western Camp but later engaged in secret communication with Eastern Camp, so that the clan was permitted to survive as a daimyo even after the establishment of Edo bakufu (Japanese feudal government headed by a shogun).
関ヶ原の戦いにおいては当初西軍についたが東軍に内通し、そのため江戸幕府成立後も大名として存続を許された。