Japan Castle Atlas
コシャマイン
A 15th-century Ainu leader regarded as the head of the Ainu side in Koshamain's War, the conflict with Japanese settlers that began in 1456. Records note that Shinoridate fell in 1457 during this war.
The Matsumae domain's history Shinra no Kiroku, in its entry for 1457, writes his name in Chinese characters and records that this Ainu chief was killed. The record was written by the settlers' side; no Ainu account survives.
In-depth article
Hakodate, Hokkaido
志苔館
Right next to this earthwork fort, three huge jars packed with more than 380,000 coins were dug up. Overlooking the sea, it was an outpost of Japanese settlers who thrived on northern sea trade.
leader of the side that took the fort, according to the recordRecord source: article
