Nagako was betrothed to her fourteenth cousin thrice removed (through Prince Fushimi Sadafusa's patrilineal descent), Prince Hirohito (1901-1989), at a very young age, in a match arranged by their parents, in the manner which was usual in Japanese society at that time.
Princess Nagako married Crown Prince Hirohito on 26 January 1924 and became the Crown Princess of Japan [REF].