Yoshitsuna was a retainer of Uesugi Kenshin and later, Uesugi Kagekatsu, whom he assisted in the Ôtate no Ran. Later, Yoshitsuna was named as one of the defenders of Uzu castle in Etchû; when Uzu fell to the Oda, Yoshitsuna committed suicide.
References
- Initial text from Samurai-Archives.com FWSeal & CEWest, 2005