Mogami Yoshiaki

(1546 –1614) was a daimyo, who submitted himself to Toyotomi Hideyoshi, when he came to power. Following Hideyoshi’s death he supported Tokugawa Ieyasu. Mogami Yoshiaki hated Toyotomi Hideyoshi because he ordered the execution of Yoshiaki’s teenage daughter when purging his nephew Toyotomi Hidetsugu, whom Yoshiaki’s daughter was engaged to. In 1600, battling together with his nephew Date Masamune, he supported Ieyasu at the famous battle of Sekigahara, after which Mogami’s domain was expanded to 520,000 koku in return for his loyal service. This made the Yamagata domain the fifth largest in Japan at the time, excluding the land held by Tokugawa.