When HIKAMI no Kawatsugu, a husband of Hamanori's daughter, Hoichi (法壱) rose in revolt in leap January, 782 (the Rebellion of HIKAMI no Kawatsugu), Hamanori was dismissed as Sangi (Royal Advisors) and Jiju (Chamberlain) because he was implicated in the rebellion.
782年（延暦元年）閏正月には、娘の法壱の夫である氷上川継が氷上川継の乱を起こすと、浜成も連座して参議・侍従を解任された。