Soga clan
The Soga clan had risen to prominence under Emperor Kinmei, with Soga no Iname becoming the first Soga to hold the title ("kabane") of "ōomi" at the imperial court. Iname married two of his daughters to Kinmei, but died before the selection of Kinmei's non-Soga son Emperor Bidatsu as the imperial successor. Bidatsu's first empress was not a member of the Soga clan, but his second empress (the future Empress Suiko) was. Bidatsu's death led to a succession dispute among supporters of Prince Oshisaka (the son of Bidatsu by his first wife), Prince Takeda (son of Bidatsu by his second wife), and Bidatsu's half-brother Prince Anahobe (son of Kinmei by Soga no Kitashihime). Prince Oshisaka had apparently been named crown prince by Emperor Bidatsu and had the support of the Mononobe clan, while the Soga clan under Soga no Umako supported the claim of Prince Anahobe. The succession struggle turned violent after "Ōomi" Soga no Umako and "Ōmuraji" Motonobe no Moriya exchanged insults at the temporary internment ceremony for Emperor Bidatsu. The Soga clan was victorious and Prince Anahobe was enthroned as Emperor Yomei.