Recently it seems to be fashionable to assume the existence of Iwasa-school and works after Matabe style are often studied along the line of the develoment of the school. It is, however, very difficult to prove that such a school really existed. Perhaps it was a small workshop whose head was Matabe and most of the works that came out of the work-shop were done by Matabe himself. Katsushige, his son, tried to develop the style of his father, only to come short of it. What he did was to imitate Matabe in formal details. Thus the author proposes that those works now found as Mataeesque must be considered in the light of the development of Matabe style.
