Doi

The Doi were a cadet branch of the Kōno clan of Iyo Province on Shikoku, descended like the main line from the Ochi house. In 1321 Doi Michimasu was entrusted with the maritime defence of Iyo by the Rokuhara tandai in Kyoto.

When the Genkō War broke out he was among the first warriors to declare for Emperor Go-Daigo. In 1333 he rose with the Tokunō and Kutsuna families, stormed Fuchū Castle, and routed the Nagato tandai Hōjō Tokinao at Ishiihama and Hoshioka, his following swelling to more than six thousand horsemen.

Under the Kenmu government he was made governor of Bitchū. In the Nanboku-chō wars he followed Nitta Yoshisada on the Southern Court side, fought at Minatogawa in 1336, and was killed that autumn in the snowy mountain passes of Echizen when Shiba Takatsune surprised the retreating imperial army.