He entered Kajii Monzeki Manzen-in Temple, one of three monzeki (temple formerly led by founder of sect, temple in which resided a member of nobility or imperial family members) of the Tendai sect as Cloistered Imperial Prince Sonun at the age of around six.
6歳の頃、尊雲法親王として、天台宗三門跡の一つである梶井門跡三千院に入る。