After the second head of the Ko school Gorojiro Masayoshi died, his second son Kozaemon Kazumune (小左衛門一宗) succeeded to the third head of the family because Masayoshi's legitimate grandson Seijiro Satoyoshi (清次郎了能) was too young; later Satoyoshi became independent and founded the school.
二世五郎次郎正能の後、嫡孫清次郎了能が幼少であったため、二男小左衛門一宗が三世を襲い、後に了能が別家して流儀を興した。