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.

The progenitor of the Nagae and Kagawa clans, Kagemasa is also claimed as an ancestor by Oba Kagechika, a famous figure of the Genpei War (1180-1185). The family name "Kamakura" comes from his family's residence in the city of Kamakura (in today's Kanagawa prefecture), where his father was a powerful official. The exact identity of his father is unclear, but most scholars cite either Taira no Kagenari or Taira no Kagetōri as likely names.

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References

• Much of this article's content comes from the Japanese-language Wikipedia article.
• Frederic, Louis (2002). "Japan Encyclopedia." Cambridge, Massachusetts: Harvard University Press.