The War of Jokyu: In 1221, the troops of Retired Emperor Go-Toba (the troops led by Shigetada YAMADA with 300 mounted armed monks of Hiei-zan Temple) and the troops of Kamakura Shogunate (the troops led by Tokifusa HOJO, the younger brother of Yoshitoki HOJO) faced each other across Seta River for a battle.
承久の乱　1221年（承久3年）、後鳥羽上皇の京軍(山田重忠が率いる比叡山の僧兵三百騎)と北条義時の弟･北条時房率いる鎌倉幕府軍が瀬田川を挟んで交戦。