Katsuyoshi was a retainer of the Takeda clan, and become a general under Takeda Katsuyori in 1562. He died during his lord's last stand at the Tenmokuzan in 1582.
References
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005
- Sengoku Jinmei Jiten