Tateyama Domain

Following the Battle of Odawara in 1590, Toyotomi Hideyoshi assigned the Kantō region to Tokugawa Ieyasu, who confirmed the Satomi as daimyō of Awa and Kazusa Provinces, with revenues of 92,000 koku.

Following the Battle of Sekigahara, Satomi Yoshiyasu also gained control of Kashima District in Hitachi Province, which increased his holdings to 122,000 koku.

During the Bakumatsu period, Inaba Masami served in several important posts within the administration of the Tokugawa shogunate.

However, with the Boshin War, he went into retirement, and his successor Inaba Masayoshi, pledged loyalty to the new Meiji government.

However, in response, the Tokugawa navy, under Enomoto Takeaki invaded Tateyama, and used it as a base to attack Satchō Alliance forces in Kazusa Province.