Siege of Gongenyama

The Siege of Gongenyama (権現山の戦い) occurred in 1510 during the Sengoku period of Japan's history. The daimyō Uesugi Tomoyoshi (上杉朝良; died 1518) had a retainer Ueda Masamori (上田政盛) who rebelled against him and laid siege to his castle of Gongenyama. Masamori was defeated.[1]

References
  1. Turnbull, Stephen (1998). The Samurai Sourcebook. Cassell & Co. p. 208. ISBN 1854095234.


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