Masatomo was a son of Noda Naritomo. He held Kurihashi castle in Shomosa and was at first a retainer of Ashikaga Haruuji. When the power of the Kanto Ashikaga waned, Masatomo came under the influence of Uesugi Kenshin. He later submitted to Hôjô Ujimasa.
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005