Because misfortunes visited the three generations successively from Imperial Prince Yoshihisa to Prince Naruhisa and to Prince Naruhisa, the Kitashirakawanomiya family was called 'tragic Miyake (house of an imperial prince)'.
能久親王、成久王、永久王と3代続けて不幸が続いたことから、北白川宮家は「悲劇の宮家」と言われた。