Lifespan: Eishō 18 or Daiei 1 (1521)
Clan: Sannohe-Nanbu → Kemanai
Father: Nanbu Masayasu
Siblings: Nanbu Yasunobu, Ishikawa Takanobu, Minami Nagayoshi, Ishigame Nobufusa, Hidenori
Children: Masatsugu, Naotsugu
Kemanai Hidenori served as a bushō during the Sengoku and Azuchi-Momoyama periods. He was also known as Nobutsugu.
In 1521, Hidenori was born as the fifth and last son of Nanbu Masayasu, the twenty-second head of the Nanbu clan. According to another source, he was the fifth son of Nanbu Yasunobu, the eldest son of Masayasu.
According to genealogical records, Hidenori was granted a fief of 2,000 koku from the Nanbu clan in Kemanai in the Kazuno District of Mutsu Province whereupon he adopted the surname of Kemanai. Hidenori served the Nanbu clan but also had exchanges with Andō Chikasue, a sengoku daimyō from neighboring Dewa Province.