Gamō Ujisato

Gamō Ujisato (1556-1595) was a leading daimyo of the Azuchi-Momoyama period, a famous general who held Aizu domain of 910,000 koku in Ōshū as a trusted vassal of Toyotomi Hideyoshi. Taken as son-in-law by Oda Nobunaga, he served under both Nobunaga and Hideyoshi, and his talent was assessed as that of "a man capable of aiming for supremacy."

Ujisato was born into the Gamō family of Hino in Ōmi Province, went to Oda Nobunaga as a hostage at age 12, and became Nobunaga's son-in-law. He learned the most advanced military and political methods of the Sengoku era under Nobunaga, and after the Honnō-ji Incident (1582), served Toyotomi Hideyoshi, earning merit in many campaigns. His achievements in the Odawara Campaign (1590) were especially valued, and after the post-war settlement of Ōshū, he was awarded Aizu domain of 920,000 koku (later 910,000 koku).

In governing Ōshū, Ujisato extensively renovated and expanded Kurokawa Castle (later Wakamatsu Castle, now Aizu-Wakamatsu Castle), building the largest modern castle in the Tōhoku region, and worked to develop the castle town. He also developed a deep interest in Southern Barbarian culture (Christianity), received baptism with the Christian name León, and was a Christian daimyo. Through exchanges with Jesuit missionaries including Luís Fróis, he actively incorporated Western culture and brought Southern Barbarian elements to his castle town.

In the realm of Japanese swords, Ujisato was a commander who used the advanced tactics instilled by Nobunaga, but also possessed deep understanding of swords. His influence in Aizu elevated the martial culture of the region and contributed to the later formation of the Aizu domain's martial spirit. The legacy of Ujisato, also the builder of Matsusaka Castle in Ise, is highly valued today as an extensive governing achievement stretching from the Tōkai region to Ōshū.

In 1595, Ujisato died of illness at the young age of 40. His early death cast a shadow over the stability of the Toyotomi regime, and contemporary warriors held him in such high esteem that the assessment "had Ujisato lived, the course of the realm would have changed" survives to this day.