Shiina Yasutane was a Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

ese daimyo

Daimyo

is a generic term referring to the powerful territorial lords in pre-modern Japan who ruled most of the country from their vast, hereditary land holdings...

 of the Sengoku period

Sengoku period

The or Warring States period in Japanese history was a time of social upheaval, political intrigue, and nearly constant military conflict that lasted roughly from the middle of the 15th century to the beginning of the 17th century. The name "Sengoku" was adopted by Japanese historians in reference...

, who was lord of the Shiina clan of Etchu Province

Etchu Province

was an old province in central Honshū, on the Sea of Japan side. It was sometimes called , with Echizen and Echigo Provinces. It bordered Echigo, Shinano, Hida, Kaga, and Noto provinces...

. Throughout the 1550's and 60's he led numerous attacks on the Jinbo clan

Jinbo clan

The ' was a Japanese clan that was active in Echigo Province during the Sengoku period, as retainers of the Uesugi clan. During the Edo period, one branch of the Jinbo would enter the service of the Matsudaira clan of Aizu; another would become hatamoto in the service of the Tokugawa shogunate....

, and in one of the few documented cases of two generals engaging personally in combat on the field, Yasutane fought with the head of the Jinbo clan, Jinbo Nagamoto

Jinbo Nagamoto

was a Japanese daimyo of the Sengoku period, who was the last lord of the Jinbō clan. He is most remembered for almost constant warfare with Shiina Yasutane, and their rivalry has been compared to that of Takeda Shingen and Uesugi Kenshin. Much like Shingen and Kenshin, they met once in personal...

, in 1554, at the battle of Imizu

Battle of Imizu

The ' was fought during Japan's Sengoku Period between two rival daimyo, Jinbo Nagamoto and Shiina Yasutane, in Etchū province during the third month of 1554. Nagamoto and Yasutane had been at odds for years, skirmishing numerous times with no clear winner...

. During this particular clash, he was slashed across the jaw by Nagamoto, which left him with lifelong disfigurement. He is believed to have been assassinated in 1576 by Kojima Motoshige

Kojima Motoshige

was a Japanese samurai of the Sengoku period who served the Uesugi clan. Prior to joining the Uesugi, Kojima had been a vassal to the Jinbo clan, however was exiled under suspicion of collusion with an enemy clan. Kojima attempted to take refuge in a temple in Hida Province, but when the temple was...

, on the orders of Uesugi Kenshin

Uesugi Kenshin

was a daimyo who ruled Echigo province in the Sengoku period of Japan.He was one of the most powerful lords of the Sengoku period. While chiefly remembered for his prowess on the battlefield, Kenshin is also regarded as an extremely skillful administrator who fostered the growth of local industries...

.