In October, 935, Yoshimasa led his army in order to defeat Masakado, and sensing this, Masakado immediately departed for the front, and on 21st, they fought against each other in Kawamagari Village, Niihari County, Hitachi Province.
承平(日本)5年（935年）10月、良正は将門追討の兵をあげ、それを察知した将門もすぐさま出陣、21日常陸国新治郡川曲村にて戦闘となる。