was a Japanese late Edo period samurai and founder of the Tōkyūjutsu () divination and self-improvement method. He lived in Edo (now Tokyo). His real name was Yokoyama Okitaka (), and he was also known as Sannosuke (), Shunkisai (), Kiosanjin (), , , and other pen names.横山丸三, Kōdansha Nihon jinmei daijiten. Via kotobank.jp横山興孝, Shibunkaku 美術人名辞典. Alt. link
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