The constituent members of the Imperial family were: the empress (Kogo), the grand empress dowager (Taikotaigo), the empress dowager (Kotaigo), the crown prince (Kotaishi), the crown princess (Kotashihi), the (eldest) son of the crown prince (Kotaison), the consort of the son of the crown prince (Kotaisonhi), imperial princes (Shinno), the consorts of imperial princes (Shinnohi), imperial princesses (Naishinno), princes (O),the consorts of princes (Ohi), princesses (Jyoo) (Article 30 of the Former Imperial House Act).
皇族の構成員は、皇后・太皇太后・皇太后・皇太子・皇太子妃・皇太孫・皇太孫妃・親王・親王妃・内親王・王(皇族)・王妃(皇族)・女王(皇族)である（旧皇室典範30条）。