In this study, we examine how crown prince―a successor of the throne―system was established in ancient Japan and how Togu (東宮) was built as crown princes place of residence. According to recent research, Aska s palace was repeatedly built in almost identical locations. Even before the establishment of the capital city system akin to a Chinese system and the introduction of crown prince, Yamato sovereignty s royal palace and a throne succession system were in place. Shimanomiya (嶋宮) is most likely to have been a place of residence for Prince Kazuraki (葛城皇子=中大兄皇子), Prince Ōama (大海人皇子) and Prince Kusakabe (草壁皇子). Seeing that Prince Karu (輕皇子) was enthroned as an emperor in the same year as he became a crown prince, Fujiwara Palace (藤原宮) is unlikely to have been considered as his place of residence. Presumably, that is why Togu was not found in Fujiwara Palace that was restored after excavation. As for Heijō Palace (平城宮), it is highly likely that Togu was built in the southeastern part of the palace around the year 715 when Prince Obito (首皇子) became an adult. Since then, Togu in the southeastern part of Hezei Palace was called Nanen(南苑) including the period of Princess Abe s(安倍內親王) stay. That is, Togu during the period of ancient Japan was clearly established by 9th century based on the legal system, and it is likely that it was located in the southeastern part of the royal palace from the early 7th century, or even as early as the late 6th century, when Yamato sovereignty s successor could be set. The location of Togu stopped being changed and fixed by the Heian period.
Ⅰ. 머리말
Ⅱ. 율령체제 이전의 왕위계승자와 東宮
Ⅲ. 율령체제하의 皇太子와 東宮
Ⅳ. 맺음말