嵯峨天皇
In 823, Emperor Saga abdicated the throne, and his younger brother ascended as Emperor Junna. In 833, the throne passed again to Saga's son, Emperor Ninmyō. At this point, Prince Tsunesada, a son of Junna by Saga's daughter Princess Seishi, was made crown prince. Saga guided the government for almost thirty years, avoiding succession disputes in that time.