 Alternatively, Sushun might have been referred to as or the "Great King of Yamato".He came to the throne with the support of the Soga clan and Empress Suiko, his half sister and the widow of Emperor Bidatsu.Initially, the Mononobe clan, a rival clan of the Sogas, allied with Prince Anahobe, another son of Kimmei, and attempted to have him installed as Emperor.