Yamamoto Haruyuki
Haruyuki was from Mikawa province and was originally a minor retainer of the Imagawa. He was introduced to Takeda Shingen by Itagaki Nobutaka, and Shingen was so impressed with Yamamoto that he gave him a stipend on the spot. Kansuke became one of Shingen's chief advisors and assisted him in capturing a number of castles in Shinano despite being partially lame and blind in one eye. He supposedly produced the plan the Takeda employed at Fourth Battle of Kawanakajima and committed suicide after suffering numerous wounds in the fighting. He is said to have written the Heiho Okugi Sho, a book of strategy, and was remembered for being questioned by Shingen on many matters. On the other hand, modern historians have suggested that many tales of Yamamoto's services to Shingen were probably embellished or even outright fictions.
References
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005
