- Born: 1534
- Died: 1582
- Title: Bungo no Kami
- Distinction: Sometimes credited as one of Takeda Shingen's 24 Generals
Masamori was the son of Obata Toramori and fought at Mimasetoge (1569), Mikatagahara (1573), and Nagashino (1575) as a commander of infantry. He was wounded at Nagashino and eventually died of illness. His son Mitsumori would survive the fall of the Takeda, escaping to Echigo. Masamori was married to a daughter of Hara Toratane.
- Initial text from Samurai-Archives.com FWSeal & CEWest, 2005