Narimasa was a retainer of Uesugi Norimasa and held Minowa castle in Kôzuke province. He was reknowned as a great warrior. He gave shelter to Sanada Yukitaka of Shinano province after Yukitaka was defeated in battle by Murakami Yoshikiyo.
References
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005