Shigetsuna YOSHIDA (Narishige's student), Shigeuji YOSHIDA (Genpachiro, former surname: Kuzumaki, his title was Issui/Isumi, his Buddhist name was Insai, Issui/Isumi ken Insai) (1562 - April 17, 1638) are regarded as the originators.
吉田重綱・業茂の弟子、吉田重氏（源八郎、旧姓：葛巻、号：一水、法名：印西、一水軒印西）（永禄5年（1562年）-寛永15年（1638年）3月4日）を祖とする。