Sekiguchi, Tadao was born on February 13, 1935 in Hidaka City, Japan. Son of Chusaku and Kimi (Arizumi) Sekiguchi.
Bachelor, Waseda U., Tokyo, 1957;
Master of Arts, Waseda U., Tokyo, 1960.
Lecturer, Mejirogakuen Woman's Junior College, Tokyo, 1966-1976;
professor, Mejirogakuen Woman's Junior College, Tokyo, 1976-1977;
lecturer, Waseda U., 1977-1981;
assistant professor Japanese literature, Daito Bunka U., Tokyo, 1978-1981;
professor, Daito Bunka U., Tokyo, since 1981.
Author: The Fundamental Study of Japenese Medieval Literature, 1992.