Bifukumon-in had two adopted sons, both of whom she had been nursing since they were babies in arms; one was Imperial Prince Shigehito, the first son of the Retired Emperor Sutoku, and the other was Prince Morihito (the seventy-eighth Japanese emperor, Emperor Nijo), the first son of Imperial Prince Masahito (the seventy-seventh Japanese emperor, Emperor Goshirakawa), who was a younger brother of the Retired Emperor Sutoku.
美福門院には崇徳上皇の第一皇子の重仁親王と上皇の弟・雅仁親王（後の第77代後白河天皇）の第一皇子・守仁王（第78代二条天皇）という乳飲み子のうちから養育してきた二人の養子がいた。