According to "Yoshioka-den," 'Musashi MIYAMOTO' was a vassal of Tadanao MATSUDAIRA, he was famous in the Hokuriku and Ou regions as a master of using two swords, and called his style 'Muteki-ryu;' he fought with two swordsmen of the Yoshioka, 'Genzaemon Naotsuna YOSHIOKA' and 'Mataichi Naoshige YOSHIOKA.'
この文書には吉岡源左衛門直綱・吉岡又市直重という二人の吉岡側の人物と、松平忠直の家臣で無敵流を号し二刀の名手北陸奥羽で有名であるとの肩書きの宮本武蔵が登場する。