Iso Mataemon Masatari (1787–1863) studied Yoshin-ryu under Hitotsuyanagi Oribe and Shin no Shinto-ryu under Homma Jouemon. He then went traveling and training throughout the country where he engaged in various competitions. It is said that he was never beaten. According to tradition he was once involved in a fight involving a hundred assailants and it was this experience that further solidified the importance of atemi-waza, or striking techniques, in his system along with throwing and strangling techniques common to other systems of jujutsu.