山城国
was a samurai and military strategist of Edo period Japan. He was born in Fushimi in Yamashiro Province (present-day Fushimi-ku, Kyoto). Among the works he wrote in his late years was the widely circulated , an introduction to warrior ethics that was influential among middle- and lower-class samurai. It is available in an English translation by William Scott Wilson as "Budoshoshinshu: The Warrior's Primer".