Kamakura Gongorō Kagemasa (鎌倉権五郎景政)(b. 1069) was a samurai descended from the Taira clan, who fought for the Minamoto clan in the Gosannen War of Japan's Heian period. He is famous for having continued to fight after losing an eye in battle during that war. This was in 1085, when Kagemasa was sixteen years of age.
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