When TAIRA no Masakado raised an army in 939 and conquered eight provinces in Kanto (Johei and Tengyo War/TAIRA no Masakado's War), he formed a coalition with TAIRA no Sadamori and attacked Sashima-gun in the Shimofusa Province, which was the base of Masakado, in March 940, next year, and suppressed the turmoil. |
天慶2年(939年)平将門が兵を挙げて関東8か国を征圧する(承平・天慶の乱平将門の乱)と、平貞盛と連合し、翌天慶3年(940年)2月、将門の本拠地である下総国猿島郡を襲い乱を平定。 |