He served the Kamakura bakufu; in the Jokyu War, he joined the army of Yasutoki HOJO going up east to enter Kyoto with his father, and in the battle of Ujigawa, he distinguished himself by leading the van of the army.
鎌倉幕府に仕え、承久の乱では父と共に北条泰時の東上軍に従って入京し、宇治川の戦いでは先陣を務める武功を挙げた。