Initially he did not receive the Emperor's order and he was named Prince Koreyasu, later he became Seii Taishogun (literally, "Great General who subdues the barbarians"), he was demoted from nobility to subject and received the name of MINAMOTO no Asomi, he returned to the Imperial Family after that and received the title to become Imperial Prince from the Emperor.
当初は親王宣下を受けず惟康王、征夷大将軍就任後に臣籍に降下し源朝臣の氏姓を賜り、後に皇籍に復帰し親王宣下を受ける。