Emperor Sūjin (崇神天皇) was the tenth imperial ruler of Japan to appear on the traditional list of emperors. No firm date can be assigned to this emperor and he is regarded by historians as a "legendary emperor". This does not necessarily imply that no such person ever existed, just that there is insufficient material to assign him to a historical period.
According to Kojiki and Nihonshoki he was the second son of the Emperor Kaika. He founded some important shrines in Yamato province, sent generals to local provinces to conqure them, and defeated a prince who rebelled against him.
Some historians identify him with the Emperor Jimmu and consider that the legend attributed to Jimmu was originally based on the life of Sujin. Other scholars assume his legend reflected the switching of dynasties and powers in Yamato province.
