佐竹氏
At the time of the Battle of Sekigahara the Satake clan was ordered by Tokugawa Ieyasu to participate in the campaign to destroy Uesugi Kagekatsu in Aizu and to provide a hostage. The Satake clan was divided, with Satake Yoshishige and many of the samurai strongly supporting Ieyasu and the Eastern Army, whereas Yoshinobu was hesitant, based on his long ties with Ishida Mitsunari and a secret treaty with the Uesugi clan. Instead of sending his army, he sent a small number of horsemen as reinforcements to Tokugawa Hidetada's attack on the Sanada clan, but for the most part remained in Mito attempting to stay neutral in the conflict. With the victory of the pro-Tokugawa forces at the Battle of Sekigahara and the subsequent establishment of the Tokugawa shogunate, the Satake clan was punished by a reduction in their "kokudaka" to 180,000 "koku", and by being ordered to surrender their ancestral home territory in Hitachi Province for the new Kubota Domain, in Dewa Province. The Satake clan also was a direct descendant of the Minamoto clan and thus had a more legitimate hereditary claim to the title of "shōgun" than the Tokugawa clan, which was another reason why Tokugawa Ieyasu viewed the clan with suspicion and as a potential threat.