Nagayoshi was a retainer of the Sagara family of Higo province. He is said to have met the wandering swordsman Kamiizumi Nobutsuna and studied under him, later forming his own school of swordsmanship (Taisha Ryu) on Kyushu.
References
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005