Sakai clan
After Tokugawa Ieyasu took control over the Kantō region in 1590, he assigned the area to his trusted general, Hiraiwa Chikayoshi, with revenues of 33,000 "koku". Following the establishment of the Tokugawa shogunate, the Hiraiwa were transferred to Kōfu Castle and were replaced by a branch of the Sakai clan, formerly daimyō of Kawagoe Domain. The Sakai ruled over nine generations from 1601 to 1749, during which time the domain was gradually enlarged to 150,000 "koku". The 2nd daimyō, Sakai Tadayo and 4th daimyō, Sakai Tadakiyo served as "tairō" within the shogunal administration.