According to the appendix of "Taira-sei Sugiwara-shi Onkeizu" (Genealogy of the Sugiwara Clan Originating from the Taira Family) written in 1751 by Karo (chief retainer) of Hiji domain, Masatsune SUGANUMA, 'Nobutoshi KINOSHITA' was instructed by 'Munisai MIYAMOTO' in the art of the sword.
宝暦元年（1751年）日出藩家老・菅沼政常が記録した平姓杉原氏御系図附言の木下延俊の項にも「剣術は宮本無二斎の流派を伝たまふ」と記載されている。