From the Muromachi period to the Sengoku period (Japan), among Kokujin Ryoshu (local samurai lords), a feudal lord who was descended from a clan in the Kamakura period, possessed more than several Gun and had the power equivalent to Daimyo (Japanese feudal lord), was called Taishin.
室町時代から戦国時代(日本)にかけては、国人領主の中でも数郡以上を領有し大名並の勢力を持った領主で、鎌倉時代以来の氏族を、一般に大身と呼んだ。