- Uesugi Akisada
nihongo|Uesugi Akisada|上杉顕定 (1454-1510) was a samurai of the
Uesugi clan , and "shugo " (Constable) ofEchigo province , succeedingUesugi Fusayoshi to that post. His loss of theKantō region toHōjō Sōun in 1510 marked a significant development of Japan'sSengoku period .His deputy ("shugo-dai"),
Nagao Tamekage , rose up against him in 1510 with the help of Hōjō Sōun, seizing the province and killing Akisada. Sōun, with Tamekage's help, would go on to conquer most of the Kantō region, and become one of the most major figures of the Sengoku period; Tamekage's sonUesugi Kenshin would likewise become a major warlord of the period, his rise with the Kantō as the center of his power base, as the result of Akisada's loss, a crucial element to his success.References
*Sansom, George (1961). "A History of Japan: 1334-1615." Stanford, California: Stanford University Press.
*Turnbull, Stephen (1998). 'The Samurai Sourcebook'. London: Cassell & Co.
Wikimedia Foundation. 2010.