1494: Uesugi Sadamasa Dies During the Chōkyō War - Sengoku Shogun Map
As conflict continued between the Yamanouchi and Ōgigayatsu Uesugi, Ōgigayatsu leader Uesugi Sadamasa prepared to attack the Yamanouchi side with Ise Sōzui but fell from his horse and died while attempting to cross the Arakawa River. His death destabilized the leadership of the Ōgigayatsu Uesugi.
Major events
- 1494-月日不詳: Uesugi Sadamasa Dies at the Arakawa — Ōgigayatsu Uesugi leader Uesugi Sadamasa, campaigning with Ise Sōzui against Yamanouchi Uesugi Akisada, fell from his horse and died while attempting to cross the Arakawa River.