According to the family record, Gene Hoin, a scholar monk of Mt. Hiei was the founder of the Okura school, who was a Jiko (teacher) of the Emperor Godaigo in the 14th century.
家伝によれば、大蔵流は14世紀に後醍醐天皇の侍講を勤めていた比叡山の学僧・玄恵法印を流祖とする。