In 1710, she became engaged to her cousin, the Imperial Prince Sadatake (a son of the Imperial Princess Yoshiko who was a younger sister of her father, the Emperor Higashiyama) and married him in 1719 when she was 20 years old.
宝永7年（1710年）、従弟（父東山天皇の同母妹福子内親王の子）にあたる貞建親王と婚約し、享保4年（1719年）、20歳で入輿。