Shigenaga was one of the Uesugi's most experienced - and most troublesome - retainers. He submitted with his lands to Takeda Shingen in 1568 but was later forgiven - only to defy Kenshin over the war against the Oda in 1577. Shigenaga nonetheless went on to serve Kagekatsu. He was the owner of a famous blade by Masamune.
- Initial text from Samurai-Archives.com FWSeal & CEWest, 2005