Imperial Prince Yoshinao was the second son of Imperial Prince Hachijonomiya Toshihito, who was famous for building Katsura Rikyu (Katsura Imperial Villa), and was a adopted child of Emperor Gomizunoo.
良尚法親王は桂離宮を造営したことで名高い八条宮智仁親王の第二皇子であり、後水尾天皇の猶子であった。