He was appointed to Kokushi (an officer of local government) of Musashi Province, after his father Yoshinobu (1184 - 1195) and his older brother Koreyoshi (1195 - ?), although his term of office is unknown.
任命時期は不明ながら父義信（1184-1195）・兄惟義（1195-?）の後を継いで武蔵国国司に任じられている。