 Hōki-ryū

Although often stated to be a student of Hayashizaki Jinsuke (林崎甚助), the ryū itself states that Katayama Hisayasu inherited eighteen secret sword techniques from his uncle Katayama Shōan.Additionally Katayama Hisayasu was also said to have been the younger brother of Takenouchi Hisamori (竹内久盛）, founder of Takenouchi ryū （竹内流）.