Yamato Clan and Heian Period
The Yamato Clan lived in a rich farming region. on the island of Honshu . In in 500 AD the yamato clan ruled much of honshu , although they did not control all of japan they called themselves the emperors of japan. Later on when Clans gained power over yamato they did not take out the emperor they told him what to do, so really he had no real power he only served as a figurehead.