Fujiwara no Sumitomo
Sumitomo built his power base in Northern Kyushu. After making a secret agreement with Taira no Masakado, who was leading a revolt in Shimōsa Province, Sumitomo led his own revolt in Iyo province in 939, and soon afterwards invaded the provinces of Harima and Bizen. The revolt quickly spread throughout the whole San'yō region.
Pursued by imperial forces led by Ono Yoshifuru and Minamoto no Tsunemoto, Sumitomo fled to Dazaifu, burning down the Dazaifu headquarters before he was defeated in battle at Hakata Bay. He then fled back to Iyo province, where he was captured. He was executed shortly afterwards, in 941, by Tachibana Tōyasu.
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