There is a common theory that Prince Haruhito was Imperial Prince Yoshihito's older brother, however there is another theory that it was recorded by mistake, and Prince Haruhito was Imperial Prince Sadafusa's younger brother.
なお、治仁王は貞成親王の兄であるというのが通説であるが、それは享年の書き誤りであって貞成親王の弟とする説もある。